1 /* 2 * WPA Supplicant 3 * Copyright (c) 2003-2012, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 * 8 * This file implements functions for registering and unregistering 9 * %wpa_supplicant interfaces. In addition, this file contains number of 10 * functions for managing network connections. 11 */ 12 13 #include "includes.h" 14 15 #include "common.h" 16 #include "crypto/random.h" 17 #include "crypto/sha1.h" 18 #include "eapol_supp/eapol_supp_sm.h" 19 #include "eap_peer/eap.h" 20 #include "eap_server/eap_methods.h" 21 #include "rsn_supp/wpa.h" 22 #include "eloop.h" 23 #include "config.h" 24 #include "utils/ext_password.h" 25 #include "l2_packet/l2_packet.h" 26 #include "wpa_supplicant_i.h" 27 #include "driver_i.h" 28 #include "ctrl_iface.h" 29 #include "pcsc_funcs.h" 30 #include "common/version.h" 31 #include "rsn_supp/preauth.h" 32 #include "rsn_supp/pmksa_cache.h" 33 #include "common/wpa_ctrl.h" 34 #include "common/ieee802_11_defs.h" 35 #include "p2p/p2p.h" 36 #include "blacklist.h" 37 #include "wpas_glue.h" 38 #include "wps_supplicant.h" 39 #include "ibss_rsn.h" 40 #include "sme.h" 41 #include "gas_query.h" 42 #include "ap.h" 43 #include "p2p_supplicant.h" 44 #include "wifi_display.h" 45 #include "notify.h" 46 #include "bgscan.h" 47 #include "autoscan.h" 48 #include "bss.h" 49 #include "scan.h" 50 #include "offchannel.h" 51 #include "hs20_supplicant.h" 52 53 const char *wpa_supplicant_version = 54 "wpa_supplicant v" VERSION_STR "\n" 55 "Copyright (c) 2003-2012, Jouni Malinen <j (at) w1.fi> and contributors"; 56 57 const char *wpa_supplicant_license = 58 "This software may be distributed under the terms of the BSD license.\n" 59 "See README for more details.\n" 60 #ifdef EAP_TLS_OPENSSL 61 "\nThis product includes software developed by the OpenSSL Project\n" 62 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n" 63 #endif /* EAP_TLS_OPENSSL */ 64 ; 65 66 #ifndef CONFIG_NO_STDOUT_DEBUG 67 /* Long text divided into parts in order to fit in C89 strings size limits. */ 68 const char *wpa_supplicant_full_license1 = 69 ""; 70 const char *wpa_supplicant_full_license2 = 71 "This software may be distributed under the terms of the BSD license.\n" 72 "\n" 73 "Redistribution and use in source and binary forms, with or without\n" 74 "modification, are permitted provided that the following conditions are\n" 75 "met:\n" 76 "\n"; 77 const char *wpa_supplicant_full_license3 = 78 "1. Redistributions of source code must retain the above copyright\n" 79 " notice, this list of conditions and the following disclaimer.\n" 80 "\n" 81 "2. Redistributions in binary form must reproduce the above copyright\n" 82 " notice, this list of conditions and the following disclaimer in the\n" 83 " documentation and/or other materials provided with the distribution.\n" 84 "\n"; 85 const char *wpa_supplicant_full_license4 = 86 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n" 87 " names of its contributors may be used to endorse or promote products\n" 88 " derived from this software without specific prior written permission.\n" 89 "\n" 90 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n" 91 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n" 92 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n" 93 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n"; 94 const char *wpa_supplicant_full_license5 = 95 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n" 96 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n" 97 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n" 98 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n" 99 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" 100 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n" 101 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" 102 "\n"; 103 #endif /* CONFIG_NO_STDOUT_DEBUG */ 104 105 extern int wpa_debug_level; 106 extern int wpa_debug_show_keys; 107 extern int wpa_debug_timestamp; 108 extern struct wpa_driver_ops *wpa_drivers[]; 109 110 /* Configure default/group WEP keys for static WEP */ 111 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 112 { 113 int i, set = 0; 114 115 for (i = 0; i < NUM_WEP_KEYS; i++) { 116 if (ssid->wep_key_len[i] == 0) 117 continue; 118 119 set = 1; 120 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL, 121 i, i == ssid->wep_tx_keyidx, NULL, 0, 122 ssid->wep_key[i], ssid->wep_key_len[i]); 123 } 124 125 return set; 126 } 127 128 129 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s, 130 struct wpa_ssid *ssid) 131 { 132 u8 key[32]; 133 size_t keylen; 134 enum wpa_alg alg; 135 u8 seq[6] = { 0 }; 136 137 /* IBSS/WPA-None uses only one key (Group) for both receiving and 138 * sending unicast and multicast packets. */ 139 140 if (ssid->mode != WPAS_MODE_IBSS) { 141 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not " 142 "IBSS/ad-hoc) for WPA-None", ssid->mode); 143 return -1; 144 } 145 146 if (!ssid->psk_set) { 147 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for " 148 "WPA-None"); 149 return -1; 150 } 151 152 switch (wpa_s->group_cipher) { 153 case WPA_CIPHER_CCMP: 154 os_memcpy(key, ssid->psk, 16); 155 keylen = 16; 156 alg = WPA_ALG_CCMP; 157 break; 158 case WPA_CIPHER_GCMP: 159 os_memcpy(key, ssid->psk, 16); 160 keylen = 16; 161 alg = WPA_ALG_GCMP; 162 break; 163 case WPA_CIPHER_TKIP: 164 /* WPA-None uses the same Michael MIC key for both TX and RX */ 165 os_memcpy(key, ssid->psk, 16 + 8); 166 os_memcpy(key + 16 + 8, ssid->psk + 16, 8); 167 keylen = 32; 168 alg = WPA_ALG_TKIP; 169 break; 170 default: 171 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for " 172 "WPA-None", wpa_s->group_cipher); 173 return -1; 174 } 175 176 /* TODO: should actually remember the previously used seq#, both for TX 177 * and RX from each STA.. */ 178 179 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen); 180 } 181 182 183 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx) 184 { 185 struct wpa_supplicant *wpa_s = eloop_ctx; 186 const u8 *bssid = wpa_s->bssid; 187 if (is_zero_ether_addr(bssid)) 188 bssid = wpa_s->pending_bssid; 189 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.", 190 MAC2STR(bssid)); 191 wpa_blacklist_add(wpa_s, bssid); 192 wpa_sm_notify_disassoc(wpa_s->wpa); 193 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 194 wpa_s->reassociate = 1; 195 196 /* 197 * If we timed out, the AP or the local radio may be busy. 198 * So, wait a second until scanning again. 199 */ 200 wpa_supplicant_req_scan(wpa_s, 1, 0); 201 202 #ifdef CONFIG_P2P 203 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled && 204 wpa_s->global->p2p != NULL) { 205 wpa_s->global->p2p_cb_on_scan_complete = 0; 206 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { 207 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " 208 "continued after timed out authentication"); 209 } 210 } 211 #endif /* CONFIG_P2P */ 212 } 213 214 215 /** 216 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication 217 * @wpa_s: Pointer to wpa_supplicant data 218 * @sec: Number of seconds after which to time out authentication 219 * @usec: Number of microseconds after which to time out authentication 220 * 221 * This function is used to schedule a timeout for the current authentication 222 * attempt. 223 */ 224 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s, 225 int sec, int usec) 226 { 227 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 && 228 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 229 return; 230 231 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec " 232 "%d usec", sec, usec); 233 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 234 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL); 235 } 236 237 238 /** 239 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout 240 * @wpa_s: Pointer to wpa_supplicant data 241 * 242 * This function is used to cancel authentication timeout scheduled with 243 * wpa_supplicant_req_auth_timeout() and it is called when authentication has 244 * been completed. 245 */ 246 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s) 247 { 248 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout"); 249 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 250 wpa_blacklist_del(wpa_s, wpa_s->bssid); 251 } 252 253 254 /** 255 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine 256 * @wpa_s: Pointer to wpa_supplicant data 257 * 258 * This function is used to configure EAPOL state machine based on the selected 259 * authentication mode. 260 */ 261 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s) 262 { 263 #ifdef IEEE8021X_EAPOL 264 struct eapol_config eapol_conf; 265 struct wpa_ssid *ssid = wpa_s->current_ssid; 266 267 #ifdef CONFIG_IBSS_RSN 268 if (ssid->mode == WPAS_MODE_IBSS && 269 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 270 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 271 /* 272 * RSN IBSS authentication is per-STA and we can disable the 273 * per-BSSID EAPOL authentication. 274 */ 275 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 276 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 277 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 278 return; 279 } 280 #endif /* CONFIG_IBSS_RSN */ 281 282 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 283 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 284 285 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 286 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 287 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 288 else 289 eapol_sm_notify_portControl(wpa_s->eapol, Auto); 290 291 os_memset(&eapol_conf, 0, sizeof(eapol_conf)); 292 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 293 eapol_conf.accept_802_1x_keys = 1; 294 eapol_conf.required_keys = 0; 295 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) { 296 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST; 297 } 298 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) { 299 eapol_conf.required_keys |= 300 EAPOL_REQUIRE_KEY_BROADCAST; 301 } 302 303 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 304 eapol_conf.required_keys = 0; 305 } 306 if (wpa_s->conf) 307 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth; 308 eapol_conf.workaround = ssid->eap_workaround; 309 eapol_conf.eap_disabled = 310 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) && 311 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA && 312 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS; 313 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf); 314 #endif /* IEEE8021X_EAPOL */ 315 } 316 317 318 /** 319 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode 320 * @wpa_s: Pointer to wpa_supplicant data 321 * @ssid: Configuration data for the network 322 * 323 * This function is used to configure WPA state machine and related parameters 324 * to a mode where WPA is not enabled. This is called as part of the 325 * authentication configuration when the selected network does not use WPA. 326 */ 327 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s, 328 struct wpa_ssid *ssid) 329 { 330 int i; 331 332 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 333 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS; 334 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) 335 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 336 else 337 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE; 338 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 339 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 340 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 341 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 342 wpa_s->group_cipher = WPA_CIPHER_NONE; 343 wpa_s->mgmt_group_cipher = 0; 344 345 for (i = 0; i < NUM_WEP_KEYS; i++) { 346 if (ssid->wep_key_len[i] > 5) { 347 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104; 348 wpa_s->group_cipher = WPA_CIPHER_WEP104; 349 break; 350 } else if (ssid->wep_key_len[i] > 0) { 351 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40; 352 wpa_s->group_cipher = WPA_CIPHER_WEP40; 353 break; 354 } 355 } 356 357 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0); 358 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 359 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 360 wpa_s->pairwise_cipher); 361 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 362 #ifdef CONFIG_IEEE80211W 363 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 364 wpa_s->mgmt_group_cipher); 365 #endif /* CONFIG_IEEE80211W */ 366 367 pmksa_cache_clear_current(wpa_s->wpa); 368 } 369 370 371 void free_hw_features(struct wpa_supplicant *wpa_s) 372 { 373 int i; 374 if (wpa_s->hw.modes == NULL) 375 return; 376 377 for (i = 0; i < wpa_s->hw.num_modes; i++) { 378 os_free(wpa_s->hw.modes[i].channels); 379 os_free(wpa_s->hw.modes[i].rates); 380 } 381 382 os_free(wpa_s->hw.modes); 383 wpa_s->hw.modes = NULL; 384 } 385 386 387 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s) 388 { 389 bgscan_deinit(wpa_s); 390 autoscan_deinit(wpa_s); 391 scard_deinit(wpa_s->scard); 392 wpa_s->scard = NULL; 393 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL); 394 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL); 395 l2_packet_deinit(wpa_s->l2); 396 wpa_s->l2 = NULL; 397 if (wpa_s->l2_br) { 398 l2_packet_deinit(wpa_s->l2_br); 399 wpa_s->l2_br = NULL; 400 } 401 402 if (wpa_s->conf != NULL) { 403 struct wpa_ssid *ssid; 404 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 405 wpas_notify_network_removed(wpa_s, ssid); 406 } 407 408 os_free(wpa_s->confname); 409 wpa_s->confname = NULL; 410 411 wpa_sm_set_eapol(wpa_s->wpa, NULL); 412 eapol_sm_deinit(wpa_s->eapol); 413 wpa_s->eapol = NULL; 414 415 rsn_preauth_deinit(wpa_s->wpa); 416 417 #ifdef CONFIG_TDLS 418 wpa_tdls_deinit(wpa_s->wpa); 419 #endif /* CONFIG_TDLS */ 420 421 pmksa_candidate_free(wpa_s->wpa); 422 wpa_sm_deinit(wpa_s->wpa); 423 wpa_s->wpa = NULL; 424 wpa_blacklist_clear(wpa_s); 425 426 wpa_bss_deinit(wpa_s); 427 428 wpa_supplicant_cancel_scan(wpa_s); 429 wpa_supplicant_cancel_auth_timeout(wpa_s); 430 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL); 431 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 432 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report, 433 wpa_s, NULL); 434 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 435 436 wpas_wps_deinit(wpa_s); 437 438 wpabuf_free(wpa_s->pending_eapol_rx); 439 wpa_s->pending_eapol_rx = NULL; 440 441 #ifdef CONFIG_IBSS_RSN 442 ibss_rsn_deinit(wpa_s->ibss_rsn); 443 wpa_s->ibss_rsn = NULL; 444 #endif /* CONFIG_IBSS_RSN */ 445 446 sme_deinit(wpa_s); 447 448 #ifdef CONFIG_AP 449 wpa_supplicant_ap_deinit(wpa_s); 450 #endif /* CONFIG_AP */ 451 452 #ifdef CONFIG_P2P 453 wpas_p2p_deinit(wpa_s); 454 #endif /* CONFIG_P2P */ 455 456 #ifdef CONFIG_OFFCHANNEL 457 offchannel_deinit(wpa_s); 458 #endif /* CONFIG_OFFCHANNEL */ 459 460 wpa_supplicant_cancel_sched_scan(wpa_s); 461 462 os_free(wpa_s->next_scan_freqs); 463 wpa_s->next_scan_freqs = NULL; 464 465 gas_query_deinit(wpa_s->gas); 466 wpa_s->gas = NULL; 467 468 free_hw_features(wpa_s); 469 470 os_free(wpa_s->bssid_filter); 471 wpa_s->bssid_filter = NULL; 472 473 wnm_bss_keep_alive_deinit(wpa_s); 474 475 ext_password_deinit(wpa_s->ext_pw); 476 wpa_s->ext_pw = NULL; 477 478 wpabuf_free(wpa_s->last_gas_resp); 479 480 os_free(wpa_s->last_scan_res); 481 wpa_s->last_scan_res = NULL; 482 } 483 484 485 /** 486 * wpa_clear_keys - Clear keys configured for the driver 487 * @wpa_s: Pointer to wpa_supplicant data 488 * @addr: Previously used BSSID or %NULL if not available 489 * 490 * This function clears the encryption keys that has been previously configured 491 * for the driver. 492 */ 493 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr) 494 { 495 if (wpa_s->keys_cleared) { 496 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have 497 * timing issues with keys being cleared just before new keys 498 * are set or just after association or something similar. This 499 * shows up in group key handshake failing often because of the 500 * client not receiving the first encrypted packets correctly. 501 * Skipping some of the extra key clearing steps seems to help 502 * in completing group key handshake more reliably. */ 503 wpa_dbg(wpa_s, MSG_DEBUG, "No keys have been configured - " 504 "skip key clearing"); 505 return; 506 } 507 508 /* MLME-DELETEKEYS.request */ 509 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 0, 0, NULL, 0, NULL, 0); 510 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 1, 0, NULL, 0, NULL, 0); 511 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 2, 0, NULL, 0, NULL, 0); 512 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 3, 0, NULL, 0, NULL, 0); 513 #ifdef CONFIG_IEEE80211W 514 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 4, 0, NULL, 0, NULL, 0); 515 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 5, 0, NULL, 0, NULL, 0); 516 #endif /* CONFIG_IEEE80211W */ 517 if (addr) { 518 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL, 519 0); 520 /* MLME-SETPROTECTION.request(None) */ 521 wpa_drv_mlme_setprotection( 522 wpa_s, addr, 523 MLME_SETPROTECTION_PROTECT_TYPE_NONE, 524 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE); 525 } 526 wpa_s->keys_cleared = 1; 527 } 528 529 530 /** 531 * wpa_supplicant_state_txt - Get the connection state name as a text string 532 * @state: State (wpa_state; WPA_*) 533 * Returns: The state name as a printable text string 534 */ 535 const char * wpa_supplicant_state_txt(enum wpa_states state) 536 { 537 switch (state) { 538 case WPA_DISCONNECTED: 539 return "DISCONNECTED"; 540 case WPA_INACTIVE: 541 return "INACTIVE"; 542 case WPA_INTERFACE_DISABLED: 543 return "INTERFACE_DISABLED"; 544 case WPA_SCANNING: 545 return "SCANNING"; 546 case WPA_AUTHENTICATING: 547 return "AUTHENTICATING"; 548 case WPA_ASSOCIATING: 549 return "ASSOCIATING"; 550 case WPA_ASSOCIATED: 551 return "ASSOCIATED"; 552 case WPA_4WAY_HANDSHAKE: 553 return "4WAY_HANDSHAKE"; 554 case WPA_GROUP_HANDSHAKE: 555 return "GROUP_HANDSHAKE"; 556 case WPA_COMPLETED: 557 return "COMPLETED"; 558 default: 559 return "UNKNOWN"; 560 } 561 } 562 563 564 #ifdef CONFIG_BGSCAN 565 566 static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s) 567 { 568 if (wpas_driver_bss_selection(wpa_s)) 569 return; 570 if (wpa_s->current_ssid == wpa_s->bgscan_ssid) 571 return; 572 573 bgscan_deinit(wpa_s); 574 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) { 575 if (bgscan_init(wpa_s, wpa_s->current_ssid)) { 576 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 577 "bgscan"); 578 /* 579 * Live without bgscan; it is only used as a roaming 580 * optimization, so the initial connection is not 581 * affected. 582 */ 583 } else { 584 struct wpa_scan_results *scan_res; 585 wpa_s->bgscan_ssid = wpa_s->current_ssid; 586 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 587 0); 588 if (scan_res) { 589 bgscan_notify_scan(wpa_s, scan_res); 590 wpa_scan_results_free(scan_res); 591 } 592 } 593 } else 594 wpa_s->bgscan_ssid = NULL; 595 } 596 597 598 static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s) 599 { 600 if (wpa_s->bgscan_ssid != NULL) { 601 bgscan_deinit(wpa_s); 602 wpa_s->bgscan_ssid = NULL; 603 } 604 } 605 606 #endif /* CONFIG_BGSCAN */ 607 608 609 static void wpa_supplicant_start_autoscan(struct wpa_supplicant *wpa_s) 610 { 611 if (autoscan_init(wpa_s, 0)) 612 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize autoscan"); 613 } 614 615 616 static void wpa_supplicant_stop_autoscan(struct wpa_supplicant *wpa_s) 617 { 618 autoscan_deinit(wpa_s); 619 } 620 621 622 void wpa_supplicant_reinit_autoscan(struct wpa_supplicant *wpa_s) 623 { 624 if (wpa_s->wpa_state == WPA_DISCONNECTED || 625 wpa_s->wpa_state == WPA_SCANNING) { 626 autoscan_deinit(wpa_s); 627 wpa_supplicant_start_autoscan(wpa_s); 628 } 629 } 630 631 632 /** 633 * wpa_supplicant_set_state - Set current connection state 634 * @wpa_s: Pointer to wpa_supplicant data 635 * @state: The new connection state 636 * 637 * This function is called whenever the connection state changes, e.g., 638 * association is completed for WPA/WPA2 4-Way Handshake is started. 639 */ 640 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, 641 enum wpa_states state) 642 { 643 enum wpa_states old_state = wpa_s->wpa_state; 644 645 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s", 646 wpa_supplicant_state_txt(wpa_s->wpa_state), 647 wpa_supplicant_state_txt(state)); 648 649 #ifdef ANDROID_P2P 650 if(state == WPA_ASSOCIATED && wpa_s->current_ssid) { 651 wpa_s->current_ssid->assoc_retry = 0; 652 } 653 #endif /* ANDROID_P2P */ 654 655 if (state != WPA_SCANNING) 656 wpa_supplicant_notify_scanning(wpa_s, 0); 657 658 if (state == WPA_COMPLETED && wpa_s->new_connection) { 659 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 660 struct wpa_ssid *ssid = wpa_s->current_ssid; 661 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to " 662 MACSTR " completed %s [id=%d id_str=%s]", 663 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ? 664 "(reauth)" : "(auth)", 665 ssid ? ssid->id : -1, 666 ssid && ssid->id_str ? ssid->id_str : ""); 667 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 668 wpas_clear_temp_disabled(wpa_s, ssid, 1); 669 wpa_s->new_connection = 0; 670 wpa_s->reassociated_connection = 1; 671 wpa_drv_set_operstate(wpa_s, 1); 672 #ifndef IEEE8021X_EAPOL 673 wpa_drv_set_supp_port(wpa_s, 1); 674 #endif /* IEEE8021X_EAPOL */ 675 wpa_s->after_wps = 0; 676 #ifdef CONFIG_P2P 677 wpas_p2p_completed(wpa_s); 678 #endif /* CONFIG_P2P */ 679 680 sme_sched_obss_scan(wpa_s, 1); 681 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING || 682 state == WPA_ASSOCIATED) { 683 wpa_s->new_connection = 1; 684 wpa_drv_set_operstate(wpa_s, 0); 685 #ifndef IEEE8021X_EAPOL 686 wpa_drv_set_supp_port(wpa_s, 0); 687 #endif /* IEEE8021X_EAPOL */ 688 sme_sched_obss_scan(wpa_s, 0); 689 } 690 wpa_s->wpa_state = state; 691 692 #ifdef CONFIG_BGSCAN 693 if (state == WPA_COMPLETED) 694 wpa_supplicant_start_bgscan(wpa_s); 695 else 696 wpa_supplicant_stop_bgscan(wpa_s); 697 #endif /* CONFIG_BGSCAN */ 698 699 if (state == WPA_AUTHENTICATING) 700 wpa_supplicant_stop_autoscan(wpa_s); 701 702 if (state == WPA_DISCONNECTED || state == WPA_INACTIVE) 703 wpa_supplicant_start_autoscan(wpa_s); 704 705 if (wpa_s->wpa_state != old_state) { 706 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 707 708 if (wpa_s->wpa_state == WPA_COMPLETED || 709 old_state == WPA_COMPLETED) 710 wpas_notify_auth_changed(wpa_s); 711 } 712 } 713 714 715 void wpa_supplicant_terminate_proc(struct wpa_global *global) 716 { 717 int pending = 0; 718 #ifdef CONFIG_WPS 719 struct wpa_supplicant *wpa_s = global->ifaces; 720 while (wpa_s) { 721 if (wpas_wps_terminate_pending(wpa_s) == 1) 722 pending = 1; 723 wpa_s = wpa_s->next; 724 } 725 #endif /* CONFIG_WPS */ 726 if (pending) 727 return; 728 eloop_terminate(); 729 } 730 731 732 static void wpa_supplicant_terminate(int sig, void *signal_ctx) 733 { 734 struct wpa_global *global = signal_ctx; 735 wpa_supplicant_terminate_proc(global); 736 } 737 738 739 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s) 740 { 741 enum wpa_states old_state = wpa_s->wpa_state; 742 743 wpa_s->pairwise_cipher = 0; 744 wpa_s->group_cipher = 0; 745 wpa_s->mgmt_group_cipher = 0; 746 wpa_s->key_mgmt = 0; 747 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED) 748 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 749 750 if (wpa_s->wpa_state != old_state) 751 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 752 } 753 754 755 /** 756 * wpa_supplicant_reload_configuration - Reload configuration data 757 * @wpa_s: Pointer to wpa_supplicant data 758 * Returns: 0 on success or -1 if configuration parsing failed 759 * 760 * This function can be used to request that the configuration data is reloaded 761 * (e.g., after configuration file change). This function is reloading 762 * configuration only for one interface, so this may need to be called multiple 763 * times if %wpa_supplicant is controlling multiple interfaces and all 764 * interfaces need reconfiguration. 765 */ 766 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s) 767 { 768 struct wpa_config *conf; 769 int reconf_ctrl; 770 int old_ap_scan; 771 772 if (wpa_s->confname == NULL) 773 return -1; 774 conf = wpa_config_read(wpa_s->confname); 775 if (conf == NULL) { 776 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration " 777 "file '%s' - exiting", wpa_s->confname); 778 return -1; 779 } 780 conf->changed_parameters = (unsigned int) -1; 781 782 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface 783 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface && 784 os_strcmp(conf->ctrl_interface, 785 wpa_s->conf->ctrl_interface) != 0); 786 787 if (reconf_ctrl && wpa_s->ctrl_iface) { 788 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 789 wpa_s->ctrl_iface = NULL; 790 } 791 792 eapol_sm_invalidate_cached_session(wpa_s->eapol); 793 if (wpa_s->current_ssid) { 794 wpa_supplicant_deauthenticate(wpa_s, 795 WLAN_REASON_DEAUTH_LEAVING); 796 } 797 798 /* 799 * TODO: should notify EAPOL SM about changes in opensc_engine_path, 800 * pkcs11_engine_path, pkcs11_module_path. 801 */ 802 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 803 /* 804 * Clear forced success to clear EAP state for next 805 * authentication. 806 */ 807 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 808 } 809 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 810 wpa_sm_set_config(wpa_s->wpa, NULL); 811 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL); 812 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 813 rsn_preauth_deinit(wpa_s->wpa); 814 815 old_ap_scan = wpa_s->conf->ap_scan; 816 wpa_config_free(wpa_s->conf); 817 wpa_s->conf = conf; 818 if (old_ap_scan != wpa_s->conf->ap_scan) 819 wpas_notify_ap_scan_changed(wpa_s); 820 821 if (reconf_ctrl) 822 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 823 824 wpa_supplicant_update_config(wpa_s); 825 826 wpa_supplicant_clear_status(wpa_s); 827 if (wpa_supplicant_enabled_networks(wpa_s)) { 828 wpa_s->reassociate = 1; 829 wpa_supplicant_req_scan(wpa_s, 0, 0); 830 } 831 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed"); 832 return 0; 833 } 834 835 836 static void wpa_supplicant_reconfig(int sig, void *signal_ctx) 837 { 838 struct wpa_global *global = signal_ctx; 839 struct wpa_supplicant *wpa_s; 840 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 841 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring", 842 sig); 843 if (wpa_supplicant_reload_configuration(wpa_s) < 0) { 844 wpa_supplicant_terminate_proc(global); 845 } 846 } 847 } 848 849 850 enum wpa_cipher cipher_suite2driver(int cipher) 851 { 852 switch (cipher) { 853 case WPA_CIPHER_NONE: 854 return CIPHER_NONE; 855 case WPA_CIPHER_WEP40: 856 return CIPHER_WEP40; 857 case WPA_CIPHER_WEP104: 858 return CIPHER_WEP104; 859 case WPA_CIPHER_CCMP: 860 return CIPHER_CCMP; 861 case WPA_CIPHER_GCMP: 862 return CIPHER_GCMP; 863 case WPA_CIPHER_TKIP: 864 default: 865 return CIPHER_TKIP; 866 } 867 } 868 869 870 enum wpa_key_mgmt key_mgmt2driver(int key_mgmt) 871 { 872 switch (key_mgmt) { 873 case WPA_KEY_MGMT_NONE: 874 return KEY_MGMT_NONE; 875 case WPA_KEY_MGMT_IEEE8021X_NO_WPA: 876 return KEY_MGMT_802_1X_NO_WPA; 877 case WPA_KEY_MGMT_IEEE8021X: 878 return KEY_MGMT_802_1X; 879 case WPA_KEY_MGMT_WPA_NONE: 880 return KEY_MGMT_WPA_NONE; 881 case WPA_KEY_MGMT_FT_IEEE8021X: 882 return KEY_MGMT_FT_802_1X; 883 case WPA_KEY_MGMT_FT_PSK: 884 return KEY_MGMT_FT_PSK; 885 case WPA_KEY_MGMT_IEEE8021X_SHA256: 886 return KEY_MGMT_802_1X_SHA256; 887 case WPA_KEY_MGMT_PSK_SHA256: 888 return KEY_MGMT_PSK_SHA256; 889 case WPA_KEY_MGMT_WPS: 890 return KEY_MGMT_WPS; 891 case WPA_KEY_MGMT_PSK: 892 default: 893 return KEY_MGMT_PSK; 894 } 895 } 896 897 898 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s, 899 struct wpa_ssid *ssid, 900 struct wpa_ie_data *ie) 901 { 902 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie); 903 if (ret) { 904 if (ret == -2) { 905 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE " 906 "from association info"); 907 } 908 return -1; 909 } 910 911 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set " 912 "cipher suites"); 913 if (!(ie->group_cipher & ssid->group_cipher)) { 914 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group " 915 "cipher 0x%x (mask 0x%x) - reject", 916 ie->group_cipher, ssid->group_cipher); 917 return -1; 918 } 919 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) { 920 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise " 921 "cipher 0x%x (mask 0x%x) - reject", 922 ie->pairwise_cipher, ssid->pairwise_cipher); 923 return -1; 924 } 925 if (!(ie->key_mgmt & ssid->key_mgmt)) { 926 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key " 927 "management 0x%x (mask 0x%x) - reject", 928 ie->key_mgmt, ssid->key_mgmt); 929 return -1; 930 } 931 932 #ifdef CONFIG_IEEE80211W 933 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) && 934 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) { 935 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP " 936 "that does not support management frame protection - " 937 "reject"); 938 return -1; 939 } 940 #endif /* CONFIG_IEEE80211W */ 941 942 return 0; 943 } 944 945 946 /** 947 * wpa_supplicant_set_suites - Set authentication and encryption parameters 948 * @wpa_s: Pointer to wpa_supplicant data 949 * @bss: Scan results for the selected BSS, or %NULL if not available 950 * @ssid: Configuration data for the selected network 951 * @wpa_ie: Buffer for the WPA/RSN IE 952 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the 953 * used buffer length in case the functions returns success. 954 * Returns: 0 on success or -1 on failure 955 * 956 * This function is used to configure authentication and encryption parameters 957 * based on the network configuration and scan result for the selected BSS (if 958 * available). 959 */ 960 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s, 961 struct wpa_bss *bss, struct wpa_ssid *ssid, 962 u8 *wpa_ie, size_t *wpa_ie_len) 963 { 964 struct wpa_ie_data ie; 965 int sel, proto; 966 const u8 *bss_wpa, *bss_rsn; 967 968 if (bss) { 969 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 970 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 971 } else 972 bss_wpa = bss_rsn = NULL; 973 974 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) && 975 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 && 976 (ie.group_cipher & ssid->group_cipher) && 977 (ie.pairwise_cipher & ssid->pairwise_cipher) && 978 (ie.key_mgmt & ssid->key_mgmt)) { 979 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0"); 980 proto = WPA_PROTO_RSN; 981 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) && 982 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 && 983 (ie.group_cipher & ssid->group_cipher) && 984 (ie.pairwise_cipher & ssid->pairwise_cipher) && 985 (ie.key_mgmt & ssid->key_mgmt)) { 986 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0"); 987 proto = WPA_PROTO_WPA; 988 } else if (bss) { 989 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN"); 990 return -1; 991 } else { 992 if (ssid->proto & WPA_PROTO_RSN) 993 proto = WPA_PROTO_RSN; 994 else 995 proto = WPA_PROTO_WPA; 996 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) { 997 os_memset(&ie, 0, sizeof(ie)); 998 ie.group_cipher = ssid->group_cipher; 999 ie.pairwise_cipher = ssid->pairwise_cipher; 1000 ie.key_mgmt = ssid->key_mgmt; 1001 #ifdef CONFIG_IEEE80211W 1002 ie.mgmt_group_cipher = 1003 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ? 1004 WPA_CIPHER_AES_128_CMAC : 0; 1005 #endif /* CONFIG_IEEE80211W */ 1006 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites " 1007 "based on configuration"); 1008 } else 1009 proto = ie.proto; 1010 } 1011 1012 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d " 1013 "pairwise %d key_mgmt %d proto %d", 1014 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto); 1015 #ifdef CONFIG_IEEE80211W 1016 if (ssid->ieee80211w) { 1017 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d", 1018 ie.mgmt_group_cipher); 1019 } 1020 #endif /* CONFIG_IEEE80211W */ 1021 1022 wpa_s->wpa_proto = proto; 1023 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto); 1024 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 1025 !!(ssid->proto & WPA_PROTO_RSN)); 1026 1027 if (bss || !wpa_s->ap_ies_from_associnfo) { 1028 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 1029 bss_wpa ? 2 + bss_wpa[1] : 0) || 1030 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 1031 bss_rsn ? 2 + bss_rsn[1] : 0)) 1032 return -1; 1033 } 1034 1035 sel = ie.group_cipher & ssid->group_cipher; 1036 if (sel & WPA_CIPHER_CCMP) { 1037 wpa_s->group_cipher = WPA_CIPHER_CCMP; 1038 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP"); 1039 } else if (sel & WPA_CIPHER_GCMP) { 1040 wpa_s->group_cipher = WPA_CIPHER_GCMP; 1041 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK GCMP"); 1042 } else if (sel & WPA_CIPHER_TKIP) { 1043 wpa_s->group_cipher = WPA_CIPHER_TKIP; 1044 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP"); 1045 } else if (sel & WPA_CIPHER_WEP104) { 1046 wpa_s->group_cipher = WPA_CIPHER_WEP104; 1047 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104"); 1048 } else if (sel & WPA_CIPHER_WEP40) { 1049 wpa_s->group_cipher = WPA_CIPHER_WEP40; 1050 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40"); 1051 } else { 1052 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group " 1053 "cipher"); 1054 return -1; 1055 } 1056 1057 sel = ie.pairwise_cipher & ssid->pairwise_cipher; 1058 if (sel & WPA_CIPHER_CCMP) { 1059 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP; 1060 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP"); 1061 } else if (sel & WPA_CIPHER_GCMP) { 1062 wpa_s->pairwise_cipher = WPA_CIPHER_GCMP; 1063 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK GCMP"); 1064 } else if (sel & WPA_CIPHER_TKIP) { 1065 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP; 1066 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP"); 1067 } else if (sel & WPA_CIPHER_NONE) { 1068 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 1069 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE"); 1070 } else { 1071 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise " 1072 "cipher"); 1073 return -1; 1074 } 1075 1076 sel = ie.key_mgmt & ssid->key_mgmt; 1077 if (0) { 1078 #ifdef CONFIG_IEEE80211R 1079 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) { 1080 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X; 1081 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X"); 1082 } else if (sel & WPA_KEY_MGMT_FT_PSK) { 1083 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK; 1084 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK"); 1085 #endif /* CONFIG_IEEE80211R */ 1086 #ifdef CONFIG_IEEE80211W 1087 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) { 1088 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256; 1089 wpa_dbg(wpa_s, MSG_DEBUG, 1090 "WPA: using KEY_MGMT 802.1X with SHA256"); 1091 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) { 1092 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256; 1093 wpa_dbg(wpa_s, MSG_DEBUG, 1094 "WPA: using KEY_MGMT PSK with SHA256"); 1095 #endif /* CONFIG_IEEE80211W */ 1096 } else if (sel & WPA_KEY_MGMT_IEEE8021X) { 1097 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X; 1098 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X"); 1099 } else if (sel & WPA_KEY_MGMT_PSK) { 1100 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK; 1101 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK"); 1102 } else if (sel & WPA_KEY_MGMT_WPA_NONE) { 1103 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE; 1104 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE"); 1105 } else { 1106 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select " 1107 "authenticated key management type"); 1108 return -1; 1109 } 1110 1111 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 1112 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 1113 wpa_s->pairwise_cipher); 1114 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 1115 1116 #ifdef CONFIG_IEEE80211W 1117 sel = ie.mgmt_group_cipher; 1118 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION || 1119 !(ie.capabilities & WPA_CAPABILITY_MFPC)) 1120 sel = 0; 1121 if (sel & WPA_CIPHER_AES_128_CMAC) { 1122 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC; 1123 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1124 "AES-128-CMAC"); 1125 } else { 1126 wpa_s->mgmt_group_cipher = 0; 1127 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher"); 1128 } 1129 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 1130 wpa_s->mgmt_group_cipher); 1131 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w); 1132 #endif /* CONFIG_IEEE80211W */ 1133 1134 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) { 1135 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE"); 1136 return -1; 1137 } 1138 1139 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) { 1140 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN); 1141 #ifndef CONFIG_NO_PBKDF2 1142 if (bss && ssid->bssid_set && ssid->ssid_len == 0 && 1143 ssid->passphrase) { 1144 u8 psk[PMK_LEN]; 1145 pbkdf2_sha1(ssid->passphrase, bss->ssid, bss->ssid_len, 1146 4096, psk, PMK_LEN); 1147 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 1148 psk, PMK_LEN); 1149 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN); 1150 } 1151 #endif /* CONFIG_NO_PBKDF2 */ 1152 #ifdef CONFIG_EXT_PASSWORD 1153 if (ssid->ext_psk) { 1154 struct wpabuf *pw = ext_password_get(wpa_s->ext_pw, 1155 ssid->ext_psk); 1156 char pw_str[64 + 1]; 1157 u8 psk[PMK_LEN]; 1158 1159 if (pw == NULL) { 1160 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No PSK " 1161 "found from external storage"); 1162 return -1; 1163 } 1164 1165 if (wpabuf_len(pw) < 8 || wpabuf_len(pw) > 64) { 1166 wpa_msg(wpa_s, MSG_INFO, "EXT PW: Unexpected " 1167 "PSK length %d in external storage", 1168 (int) wpabuf_len(pw)); 1169 ext_password_free(pw); 1170 return -1; 1171 } 1172 1173 os_memcpy(pw_str, wpabuf_head(pw), wpabuf_len(pw)); 1174 pw_str[wpabuf_len(pw)] = '\0'; 1175 1176 #ifndef CONFIG_NO_PBKDF2 1177 if (wpabuf_len(pw) >= 8 && wpabuf_len(pw) < 64 && bss) 1178 { 1179 pbkdf2_sha1(pw_str, bss->ssid, bss->ssid_len, 1180 4096, psk, PMK_LEN); 1181 os_memset(pw_str, 0, sizeof(pw_str)); 1182 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from " 1183 "external passphrase)", 1184 psk, PMK_LEN); 1185 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN); 1186 } else 1187 #endif /* CONFIG_NO_PBKDF2 */ 1188 if (wpabuf_len(pw) == 2 * PMK_LEN) { 1189 if (hexstr2bin(pw_str, psk, PMK_LEN) < 0) { 1190 wpa_msg(wpa_s, MSG_INFO, "EXT PW: " 1191 "Invalid PSK hex string"); 1192 os_memset(pw_str, 0, sizeof(pw_str)); 1193 ext_password_free(pw); 1194 return -1; 1195 } 1196 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN); 1197 } else { 1198 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No suitable " 1199 "PSK available"); 1200 os_memset(pw_str, 0, sizeof(pw_str)); 1201 ext_password_free(pw); 1202 return -1; 1203 } 1204 1205 os_memset(pw_str, 0, sizeof(pw_str)); 1206 ext_password_free(pw); 1207 } 1208 #endif /* CONFIG_EXT_PASSWORD */ 1209 } else 1210 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa); 1211 1212 return 0; 1213 } 1214 1215 1216 /** 1217 * wpa_supplicant_associate - Request association 1218 * @wpa_s: Pointer to wpa_supplicant data 1219 * @bss: Scan results for the selected BSS, or %NULL if not available 1220 * @ssid: Configuration data for the selected network 1221 * 1222 * This function is used to request %wpa_supplicant to associate with a BSS. 1223 */ 1224 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s, 1225 struct wpa_bss *bss, struct wpa_ssid *ssid) 1226 { 1227 u8 wpa_ie[200]; 1228 size_t wpa_ie_len; 1229 int use_crypt, ret, i, bssid_changed; 1230 int algs = WPA_AUTH_ALG_OPEN; 1231 enum wpa_cipher cipher_pairwise, cipher_group; 1232 struct wpa_driver_associate_params params; 1233 int wep_keys_set = 0; 1234 struct wpa_driver_capa capa; 1235 int assoc_failed = 0; 1236 struct wpa_ssid *old_ssid; 1237 #ifdef CONFIG_HT_OVERRIDES 1238 struct ieee80211_ht_capabilities htcaps; 1239 struct ieee80211_ht_capabilities htcaps_mask; 1240 #endif /* CONFIG_HT_OVERRIDES */ 1241 1242 #ifdef CONFIG_IBSS_RSN 1243 ibss_rsn_deinit(wpa_s->ibss_rsn); 1244 wpa_s->ibss_rsn = NULL; 1245 #endif /* CONFIG_IBSS_RSN */ 1246 #ifdef ANDROID_P2P 1247 int freq = 0; 1248 #endif 1249 1250 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO || 1251 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1252 #ifdef CONFIG_AP 1253 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) { 1254 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP " 1255 "mode"); 1256 return; 1257 } 1258 if (wpa_supplicant_create_ap(wpa_s, ssid) < 0) { 1259 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1260 return; 1261 } 1262 wpa_s->current_bss = bss; 1263 #else /* CONFIG_AP */ 1264 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in " 1265 "the build"); 1266 #endif /* CONFIG_AP */ 1267 return; 1268 } 1269 1270 #ifdef CONFIG_TDLS 1271 if (bss) 1272 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1), 1273 bss->ie_len); 1274 #endif /* CONFIG_TDLS */ 1275 1276 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1277 ssid->mode == IEEE80211_MODE_INFRA) { 1278 sme_authenticate(wpa_s, bss, ssid); 1279 return; 1280 } 1281 1282 os_memset(¶ms, 0, sizeof(params)); 1283 wpa_s->reassociate = 0; 1284 if (bss && !wpas_driver_bss_selection(wpa_s)) { 1285 #ifdef CONFIG_IEEE80211R 1286 const u8 *ie, *md = NULL; 1287 #endif /* CONFIG_IEEE80211R */ 1288 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 1289 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid), 1290 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq); 1291 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 1292 os_memset(wpa_s->bssid, 0, ETH_ALEN); 1293 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 1294 if (bssid_changed) 1295 wpas_notify_bssid_changed(wpa_s); 1296 #ifdef CONFIG_IEEE80211R 1297 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 1298 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 1299 md = ie + 2; 1300 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 1301 if (md) { 1302 /* Prepare for the next transition */ 1303 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 1304 } 1305 #endif /* CONFIG_IEEE80211R */ 1306 #ifdef CONFIG_WPS 1307 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) && 1308 wpa_s->conf->ap_scan == 2 && 1309 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 1310 /* Use ap_scan==1 style network selection to find the network 1311 */ 1312 wpa_s->scan_req = 2; 1313 wpa_s->reassociate = 1; 1314 wpa_supplicant_req_scan(wpa_s, 0, 0); 1315 return; 1316 #endif /* CONFIG_WPS */ 1317 } else { 1318 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'", 1319 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 1320 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1321 } 1322 wpa_supplicant_cancel_sched_scan(wpa_s); 1323 wpa_supplicant_cancel_scan(wpa_s); 1324 1325 /* Starting new association, so clear the possibly used WPA IE from the 1326 * previous association. */ 1327 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1328 1329 #ifdef IEEE8021X_EAPOL 1330 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1331 if (ssid->leap) { 1332 if (ssid->non_leap == 0) 1333 algs = WPA_AUTH_ALG_LEAP; 1334 else 1335 algs |= WPA_AUTH_ALG_LEAP; 1336 } 1337 } 1338 #endif /* IEEE8021X_EAPOL */ 1339 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs); 1340 if (ssid->auth_alg) { 1341 algs = ssid->auth_alg; 1342 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 1343 "0x%x", algs); 1344 } 1345 1346 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 1347 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 1348 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 1349 int try_opportunistic; 1350 try_opportunistic = ssid->proactive_key_caching && 1351 (ssid->proto & WPA_PROTO_RSN); 1352 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 1353 wpa_s->current_ssid, 1354 try_opportunistic) == 0) 1355 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); 1356 wpa_ie_len = sizeof(wpa_ie); 1357 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 1358 wpa_ie, &wpa_ie_len)) { 1359 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 1360 "key management and encryption suites"); 1361 return; 1362 } 1363 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && bss && 1364 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 1365 /* 1366 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 1367 * use non-WPA since the scan results did not indicate that the 1368 * AP is using WPA or WPA2. 1369 */ 1370 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1371 wpa_ie_len = 0; 1372 wpa_s->wpa_proto = 0; 1373 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 1374 wpa_ie_len = sizeof(wpa_ie); 1375 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 1376 wpa_ie, &wpa_ie_len)) { 1377 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 1378 "key management and encryption suites (no " 1379 "scan results)"); 1380 return; 1381 } 1382 #ifdef CONFIG_WPS 1383 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 1384 struct wpabuf *wps_ie; 1385 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 1386 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) { 1387 wpa_ie_len = wpabuf_len(wps_ie); 1388 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len); 1389 } else 1390 wpa_ie_len = 0; 1391 wpabuf_free(wps_ie); 1392 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1393 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY)) 1394 params.wps = WPS_MODE_PRIVACY; 1395 else 1396 params.wps = WPS_MODE_OPEN; 1397 wpa_s->wpa_proto = 0; 1398 #endif /* CONFIG_WPS */ 1399 } else { 1400 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1401 wpa_ie_len = 0; 1402 wpa_s->wpa_proto = 0; 1403 } 1404 1405 #ifdef CONFIG_P2P 1406 if (wpa_s->global->p2p) { 1407 u8 *pos; 1408 size_t len; 1409 int res; 1410 pos = wpa_ie + wpa_ie_len; 1411 len = sizeof(wpa_ie) - wpa_ie_len; 1412 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 1413 ssid->p2p_group); 1414 if (res >= 0) 1415 wpa_ie_len += res; 1416 } 1417 1418 wpa_s->cross_connect_disallowed = 0; 1419 if (bss) { 1420 struct wpabuf *p2p; 1421 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 1422 if (p2p) { 1423 wpa_s->cross_connect_disallowed = 1424 p2p_get_cross_connect_disallowed(p2p); 1425 wpabuf_free(p2p); 1426 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross " 1427 "connection", 1428 wpa_s->cross_connect_disallowed ? 1429 "disallows" : "allows"); 1430 } 1431 } 1432 #endif /* CONFIG_P2P */ 1433 1434 #ifdef CONFIG_HS20 1435 if (wpa_s->conf->hs20) { 1436 struct wpabuf *hs20; 1437 hs20 = wpabuf_alloc(20); 1438 if (hs20) { 1439 wpas_hs20_add_indication(hs20); 1440 os_memcpy(wpa_ie + wpa_ie_len, wpabuf_head(hs20), 1441 wpabuf_len(hs20)); 1442 wpa_ie_len += wpabuf_len(hs20); 1443 wpabuf_free(hs20); 1444 } 1445 } 1446 #endif /* CONFIG_HS20 */ 1447 1448 #ifdef CONFIG_INTERWORKING 1449 if (wpa_s->conf->interworking) { 1450 u8 *pos = wpa_ie; 1451 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN) 1452 pos += 2 + pos[1]; 1453 os_memmove(pos + 6, pos, wpa_ie_len - (pos - wpa_ie)); 1454 wpa_ie_len += 6; 1455 *pos++ = WLAN_EID_EXT_CAPAB; 1456 *pos++ = 4; 1457 *pos++ = 0x00; 1458 *pos++ = 0x00; 1459 *pos++ = 0x00; 1460 *pos++ = 0x80; /* Bit 31 - Interworking */ 1461 } 1462 #endif /* CONFIG_INTERWORKING */ 1463 1464 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL); 1465 use_crypt = 1; 1466 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher); 1467 cipher_group = cipher_suite2driver(wpa_s->group_cipher); 1468 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 1469 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1470 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) 1471 use_crypt = 0; 1472 if (wpa_set_wep_keys(wpa_s, ssid)) { 1473 use_crypt = 1; 1474 wep_keys_set = 1; 1475 } 1476 } 1477 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) 1478 use_crypt = 0; 1479 1480 #ifdef IEEE8021X_EAPOL 1481 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1482 if ((ssid->eapol_flags & 1483 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 1484 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 && 1485 !wep_keys_set) { 1486 use_crypt = 0; 1487 } else { 1488 /* Assume that dynamic WEP-104 keys will be used and 1489 * set cipher suites in order for drivers to expect 1490 * encryption. */ 1491 cipher_pairwise = cipher_group = CIPHER_WEP104; 1492 } 1493 } 1494 #endif /* IEEE8021X_EAPOL */ 1495 1496 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 1497 /* Set the key before (and later after) association */ 1498 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 1499 } 1500 1501 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 1502 if (bss) { 1503 params.ssid = bss->ssid; 1504 params.ssid_len = bss->ssid_len; 1505 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) { 1506 wpa_printf(MSG_DEBUG, "Limit connection to BSSID " 1507 MACSTR " freq=%u MHz based on scan results " 1508 "(bssid_set=%d)", 1509 MAC2STR(bss->bssid), bss->freq, 1510 ssid->bssid_set); 1511 params.bssid = bss->bssid; 1512 params.freq = bss->freq; 1513 } 1514 } else { 1515 params.ssid = ssid->ssid; 1516 params.ssid_len = ssid->ssid_len; 1517 } 1518 1519 if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set && 1520 wpa_s->conf->ap_scan == 2) { 1521 params.bssid = ssid->bssid; 1522 params.fixed_bssid = 1; 1523 } 1524 1525 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 && 1526 params.freq == 0) 1527 params.freq = ssid->frequency; /* Initial channel for IBSS */ 1528 params.wpa_ie = wpa_ie; 1529 params.wpa_ie_len = wpa_ie_len; 1530 params.pairwise_suite = cipher_pairwise; 1531 params.group_suite = cipher_group; 1532 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt); 1533 params.wpa_proto = wpa_s->wpa_proto; 1534 params.auth_alg = algs; 1535 params.mode = ssid->mode; 1536 params.bg_scan_period = ssid->bg_scan_period; 1537 for (i = 0; i < NUM_WEP_KEYS; i++) { 1538 if (ssid->wep_key_len[i]) 1539 params.wep_key[i] = ssid->wep_key[i]; 1540 params.wep_key_len[i] = ssid->wep_key_len[i]; 1541 } 1542 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 1543 1544 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 1545 (params.key_mgmt_suite == KEY_MGMT_PSK || 1546 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) { 1547 params.passphrase = ssid->passphrase; 1548 if (ssid->psk_set) 1549 params.psk = ssid->psk; 1550 } 1551 1552 params.drop_unencrypted = use_crypt; 1553 1554 #ifdef CONFIG_IEEE80211W 1555 params.mgmt_frame_protection = ssid->ieee80211w; 1556 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) { 1557 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1558 struct wpa_ie_data ie; 1559 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 && 1560 ie.capabilities & 1561 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 1562 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports " 1563 "MFP: require MFP"); 1564 params.mgmt_frame_protection = 1565 MGMT_FRAME_PROTECTION_REQUIRED; 1566 } 1567 } 1568 #endif /* CONFIG_IEEE80211W */ 1569 1570 params.p2p = ssid->p2p_group; 1571 1572 if (wpa_s->parent->set_sta_uapsd) 1573 params.uapsd = wpa_s->parent->sta_uapsd; 1574 else 1575 params.uapsd = -1; 1576 1577 #ifdef CONFIG_HT_OVERRIDES 1578 os_memset(&htcaps, 0, sizeof(htcaps)); 1579 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 1580 params.htcaps = (u8 *) &htcaps; 1581 params.htcaps_mask = (u8 *) &htcaps_mask; 1582 wpa_supplicant_apply_ht_overrides(wpa_s, ssid, ¶ms); 1583 #endif /* CONFIG_HT_OVERRIDES */ 1584 1585 #ifdef ANDROID_P2P 1586 /* If multichannel concurrency is not supported, check for any frequency 1587 * conflict and take appropriate action. 1588 */ 1589 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) && 1590 ((freq = wpa_drv_shared_freq(wpa_s)) > 0) && (freq != params.freq)) { 1591 wpa_printf(MSG_DEBUG, "Shared interface with conflicting frequency found (%d != %d)" 1592 , freq, params.freq); 1593 if (wpas_p2p_handle_frequency_conflicts(wpa_s, params.freq) < 0) { 1594 /* Handling conflicts failed. Disable the current connect req and 1595 * notify the userspace to take appropriate action */ 1596 wpa_printf(MSG_DEBUG, "proiritize is not set. Notifying user space to handle the case"); 1597 wpa_supplicant_disable_network(wpa_s, ssid); 1598 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_FREQ_CONFLICT 1599 " id=%d", ssid->id); 1600 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1601 return; 1602 } 1603 } 1604 #endif 1605 ret = wpa_drv_associate(wpa_s, ¶ms); 1606 if (ret < 0) { 1607 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver " 1608 "failed"); 1609 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) { 1610 /* 1611 * The driver is known to mean what is saying, so we 1612 * can stop right here; the association will not 1613 * succeed. 1614 */ 1615 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1616 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1617 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1618 return; 1619 } 1620 /* try to continue anyway; new association will be tried again 1621 * after timeout */ 1622 assoc_failed = 1; 1623 } 1624 1625 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 1626 /* Set the key after the association just in case association 1627 * cleared the previously configured key. */ 1628 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 1629 /* No need to timeout authentication since there is no key 1630 * management. */ 1631 wpa_supplicant_cancel_auth_timeout(wpa_s); 1632 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 1633 #ifdef CONFIG_IBSS_RSN 1634 } else if (ssid->mode == WPAS_MODE_IBSS && 1635 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 1636 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 1637 /* 1638 * RSN IBSS authentication is per-STA and we can disable the 1639 * per-BSSID authentication. 1640 */ 1641 wpa_supplicant_cancel_auth_timeout(wpa_s); 1642 #endif /* CONFIG_IBSS_RSN */ 1643 } else { 1644 /* Timeout for IEEE 802.11 authentication and association */ 1645 int timeout = 60; 1646 1647 if (assoc_failed) { 1648 /* give IBSS a bit more time */ 1649 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5; 1650 } else if (wpa_s->conf->ap_scan == 1) { 1651 /* give IBSS a bit more time */ 1652 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10; 1653 } 1654 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0); 1655 } 1656 1657 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 && 1658 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) { 1659 /* Set static WEP keys again */ 1660 wpa_set_wep_keys(wpa_s, ssid); 1661 } 1662 1663 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) { 1664 /* 1665 * Do not allow EAP session resumption between different 1666 * network configurations. 1667 */ 1668 eapol_sm_invalidate_cached_session(wpa_s->eapol); 1669 } 1670 old_ssid = wpa_s->current_ssid; 1671 wpa_s->current_ssid = ssid; 1672 wpa_s->current_bss = bss; 1673 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 1674 wpa_supplicant_initiate_eapol(wpa_s); 1675 if (old_ssid != wpa_s->current_ssid) 1676 wpas_notify_network_changed(wpa_s); 1677 } 1678 1679 1680 static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s, 1681 const u8 *addr) 1682 { 1683 struct wpa_ssid *old_ssid; 1684 1685 wpa_clear_keys(wpa_s, addr); 1686 old_ssid = wpa_s->current_ssid; 1687 wpa_supplicant_mark_disassoc(wpa_s); 1688 wpa_sm_set_config(wpa_s->wpa, NULL); 1689 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 1690 if (old_ssid != wpa_s->current_ssid) 1691 wpas_notify_network_changed(wpa_s); 1692 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 1693 } 1694 1695 1696 /** 1697 * wpa_supplicant_disassociate - Disassociate the current connection 1698 * @wpa_s: Pointer to wpa_supplicant data 1699 * @reason_code: IEEE 802.11 reason code for the disassociate frame 1700 * 1701 * This function is used to request %wpa_supplicant to disassociate with the 1702 * current AP. 1703 */ 1704 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s, 1705 int reason_code) 1706 { 1707 u8 *addr = NULL; 1708 union wpa_event_data event; 1709 1710 if (!is_zero_ether_addr(wpa_s->bssid)) { 1711 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code); 1712 addr = wpa_s->bssid; 1713 os_memset(&event, 0, sizeof(event)); 1714 event.disassoc_info.reason_code = (u16) reason_code; 1715 event.disassoc_info.locally_generated = 1; 1716 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, &event); 1717 } 1718 1719 wpa_supplicant_clear_connection(wpa_s, addr); 1720 } 1721 1722 1723 /** 1724 * wpa_supplicant_deauthenticate - Deauthenticate the current connection 1725 * @wpa_s: Pointer to wpa_supplicant data 1726 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame 1727 * 1728 * This function is used to request %wpa_supplicant to deauthenticate from the 1729 * current AP. 1730 */ 1731 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s, 1732 int reason_code) 1733 { 1734 u8 *addr = NULL; 1735 union wpa_event_data event; 1736 1737 if (!is_zero_ether_addr(wpa_s->bssid)) { 1738 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid, reason_code); 1739 addr = wpa_s->bssid; 1740 os_memset(&event, 0, sizeof(event)); 1741 event.deauth_info.reason_code = (u16) reason_code; 1742 event.deauth_info.locally_generated = 1; 1743 wpa_supplicant_event(wpa_s, EVENT_DEAUTH, &event); 1744 } 1745 1746 wpa_supplicant_clear_connection(wpa_s, addr); 1747 } 1748 1749 1750 /** 1751 * wpa_supplicant_enable_network - Mark a configured network as enabled 1752 * @wpa_s: wpa_supplicant structure for a network interface 1753 * @ssid: wpa_ssid structure for a configured network or %NULL 1754 * 1755 * Enables the specified network or all networks if no network specified. 1756 */ 1757 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s, 1758 struct wpa_ssid *ssid) 1759 { 1760 struct wpa_ssid *other_ssid; 1761 int was_disabled; 1762 1763 if (ssid == NULL) { 1764 for (other_ssid = wpa_s->conf->ssid; other_ssid; 1765 other_ssid = other_ssid->next) { 1766 if (other_ssid->disabled == 2) 1767 continue; /* do not change persistent P2P group 1768 * data */ 1769 if (other_ssid == wpa_s->current_ssid && 1770 other_ssid->disabled) 1771 wpa_s->reassociate = 1; 1772 1773 was_disabled = other_ssid->disabled; 1774 1775 other_ssid->disabled = 0; 1776 if (was_disabled) 1777 wpas_clear_temp_disabled(wpa_s, other_ssid, 0); 1778 1779 if (was_disabled != other_ssid->disabled) 1780 wpas_notify_network_enabled_changed( 1781 wpa_s, other_ssid); 1782 } 1783 if (wpa_s->reassociate) 1784 wpa_supplicant_req_scan(wpa_s, 0, 0); 1785 } else if (ssid->disabled && ssid->disabled != 2) { 1786 if (wpa_s->current_ssid == NULL) { 1787 /* 1788 * Try to reassociate since there is no current 1789 * configuration and a new network was made available. 1790 */ 1791 wpa_s->reassociate = 1; 1792 wpa_supplicant_req_scan(wpa_s, 0, 0); 1793 } 1794 1795 was_disabled = ssid->disabled; 1796 1797 ssid->disabled = 0; 1798 wpas_clear_temp_disabled(wpa_s, ssid, 1); 1799 1800 if (was_disabled != ssid->disabled) 1801 wpas_notify_network_enabled_changed(wpa_s, ssid); 1802 } 1803 } 1804 1805 1806 /** 1807 * wpa_supplicant_disable_network - Mark a configured network as disabled 1808 * @wpa_s: wpa_supplicant structure for a network interface 1809 * @ssid: wpa_ssid structure for a configured network or %NULL 1810 * 1811 * Disables the specified network or all networks if no network specified. 1812 */ 1813 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s, 1814 struct wpa_ssid *ssid) 1815 { 1816 struct wpa_ssid *other_ssid; 1817 int was_disabled; 1818 1819 if (ssid == NULL) { 1820 for (other_ssid = wpa_s->conf->ssid; other_ssid; 1821 other_ssid = other_ssid->next) { 1822 was_disabled = other_ssid->disabled; 1823 if (was_disabled == 2) 1824 continue; /* do not change persistent P2P group 1825 * data */ 1826 1827 other_ssid->disabled = 1; 1828 1829 if (was_disabled != other_ssid->disabled) 1830 wpas_notify_network_enabled_changed( 1831 wpa_s, other_ssid); 1832 } 1833 if (wpa_s->current_ssid) 1834 wpa_supplicant_disassociate( 1835 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1836 } else if (ssid->disabled != 2) { 1837 if (ssid == wpa_s->current_ssid) 1838 wpa_supplicant_disassociate( 1839 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1840 1841 was_disabled = ssid->disabled; 1842 1843 ssid->disabled = 1; 1844 1845 if (was_disabled != ssid->disabled) 1846 wpas_notify_network_enabled_changed(wpa_s, ssid); 1847 } 1848 } 1849 1850 1851 /** 1852 * wpa_supplicant_select_network - Attempt association with a network 1853 * @wpa_s: wpa_supplicant structure for a network interface 1854 * @ssid: wpa_ssid structure for a configured network or %NULL for any network 1855 */ 1856 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s, 1857 struct wpa_ssid *ssid) 1858 { 1859 1860 struct wpa_ssid *other_ssid; 1861 int disconnected = 0; 1862 1863 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) { 1864 wpa_supplicant_disassociate( 1865 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1866 disconnected = 1; 1867 } 1868 1869 if (ssid) 1870 wpas_clear_temp_disabled(wpa_s, ssid, 1); 1871 1872 /* 1873 * Mark all other networks disabled or mark all networks enabled if no 1874 * network specified. 1875 */ 1876 for (other_ssid = wpa_s->conf->ssid; other_ssid; 1877 other_ssid = other_ssid->next) { 1878 int was_disabled = other_ssid->disabled; 1879 if (was_disabled == 2) 1880 continue; /* do not change persistent P2P group data */ 1881 1882 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0; 1883 if (was_disabled && !other_ssid->disabled) 1884 wpas_clear_temp_disabled(wpa_s, other_ssid, 0); 1885 1886 if (was_disabled != other_ssid->disabled) 1887 wpas_notify_network_enabled_changed(wpa_s, other_ssid); 1888 } 1889 1890 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) { 1891 /* We are already associated with the selected network */ 1892 wpa_printf(MSG_DEBUG, "Already associated with the " 1893 "selected network - do nothing"); 1894 return; 1895 } 1896 1897 if (ssid) 1898 wpa_s->current_ssid = ssid; 1899 wpa_s->connect_without_scan = NULL; 1900 wpa_s->disconnected = 0; 1901 wpa_s->reassociate = 1; 1902 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0); 1903 1904 if (ssid) 1905 wpas_notify_network_selected(wpa_s, ssid); 1906 } 1907 1908 1909 /** 1910 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface 1911 * @wpa_s: wpa_supplicant structure for a network interface 1912 * @ap_scan: AP scan mode 1913 * Returns: 0 if succeed or -1 if ap_scan has an invalid value 1914 * 1915 */ 1916 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan) 1917 { 1918 1919 int old_ap_scan; 1920 1921 if (ap_scan < 0 || ap_scan > 2) 1922 return -1; 1923 1924 #ifdef ANDROID 1925 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan && 1926 wpa_s->wpa_state >= WPA_ASSOCIATING && 1927 wpa_s->wpa_state < WPA_COMPLETED) { 1928 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while " 1929 "associating", wpa_s->conf->ap_scan, ap_scan); 1930 return 0; 1931 } 1932 #endif /* ANDROID */ 1933 1934 old_ap_scan = wpa_s->conf->ap_scan; 1935 wpa_s->conf->ap_scan = ap_scan; 1936 1937 if (old_ap_scan != wpa_s->conf->ap_scan) 1938 wpas_notify_ap_scan_changed(wpa_s); 1939 1940 return 0; 1941 } 1942 1943 1944 /** 1945 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age 1946 * @wpa_s: wpa_supplicant structure for a network interface 1947 * @expire_age: Expiration age in seconds 1948 * Returns: 0 if succeed or -1 if expire_age has an invalid value 1949 * 1950 */ 1951 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s, 1952 unsigned int bss_expire_age) 1953 { 1954 if (bss_expire_age < 10) { 1955 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u", 1956 bss_expire_age); 1957 return -1; 1958 } 1959 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec", 1960 bss_expire_age); 1961 wpa_s->conf->bss_expiration_age = bss_expire_age; 1962 1963 return 0; 1964 } 1965 1966 1967 /** 1968 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count 1969 * @wpa_s: wpa_supplicant structure for a network interface 1970 * @expire_count: number of scans after which an unseen BSS is reclaimed 1971 * Returns: 0 if succeed or -1 if expire_count has an invalid value 1972 * 1973 */ 1974 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s, 1975 unsigned int bss_expire_count) 1976 { 1977 if (bss_expire_count < 1) { 1978 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u", 1979 bss_expire_count); 1980 return -1; 1981 } 1982 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u", 1983 bss_expire_count); 1984 wpa_s->conf->bss_expiration_scan_count = bss_expire_count; 1985 1986 return 0; 1987 } 1988 1989 1990 /** 1991 * wpa_supplicant_set_scan_interval - Set scan interval 1992 * @wpa_s: wpa_supplicant structure for a network interface 1993 * @scan_interval: scan interval in seconds 1994 * Returns: 0 if succeed or -1 if scan_interval has an invalid value 1995 * 1996 */ 1997 int wpa_supplicant_set_scan_interval(struct wpa_supplicant *wpa_s, 1998 int scan_interval) 1999 { 2000 if (scan_interval < 0) { 2001 wpa_msg(wpa_s, MSG_ERROR, "Invalid scan interval %d", 2002 scan_interval); 2003 return -1; 2004 } 2005 wpa_msg(wpa_s, MSG_DEBUG, "Setting scan interval: %d sec", 2006 scan_interval); 2007 wpa_s->scan_interval = scan_interval; 2008 2009 return 0; 2010 } 2011 2012 2013 /** 2014 * wpa_supplicant_set_debug_params - Set global debug params 2015 * @global: wpa_global structure 2016 * @debug_level: debug level 2017 * @debug_timestamp: determines if show timestamp in debug data 2018 * @debug_show_keys: determines if show keys in debug data 2019 * Returns: 0 if succeed or -1 if debug_level has wrong value 2020 */ 2021 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level, 2022 int debug_timestamp, int debug_show_keys) 2023 { 2024 2025 int old_level, old_timestamp, old_show_keys; 2026 2027 /* check for allowed debuglevels */ 2028 if (debug_level != MSG_EXCESSIVE && 2029 debug_level != MSG_MSGDUMP && 2030 debug_level != MSG_DEBUG && 2031 debug_level != MSG_INFO && 2032 debug_level != MSG_WARNING && 2033 debug_level != MSG_ERROR) 2034 return -1; 2035 2036 old_level = wpa_debug_level; 2037 old_timestamp = wpa_debug_timestamp; 2038 old_show_keys = wpa_debug_show_keys; 2039 2040 wpa_debug_level = debug_level; 2041 wpa_debug_timestamp = debug_timestamp ? 1 : 0; 2042 wpa_debug_show_keys = debug_show_keys ? 1 : 0; 2043 2044 if (wpa_debug_level != old_level) 2045 wpas_notify_debug_level_changed(global); 2046 if (wpa_debug_timestamp != old_timestamp) 2047 wpas_notify_debug_timestamp_changed(global); 2048 if (wpa_debug_show_keys != old_show_keys) 2049 wpas_notify_debug_show_keys_changed(global); 2050 2051 return 0; 2052 } 2053 2054 2055 /** 2056 * wpa_supplicant_get_ssid - Get a pointer to the current network structure 2057 * @wpa_s: Pointer to wpa_supplicant data 2058 * Returns: A pointer to the current network structure or %NULL on failure 2059 */ 2060 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s) 2061 { 2062 struct wpa_ssid *entry; 2063 u8 ssid[MAX_SSID_LEN]; 2064 int res; 2065 size_t ssid_len; 2066 u8 bssid[ETH_ALEN]; 2067 int wired; 2068 2069 res = wpa_drv_get_ssid(wpa_s, ssid); 2070 if (res < 0) { 2071 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from " 2072 "driver"); 2073 return NULL; 2074 } 2075 ssid_len = res; 2076 2077 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 2078 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from " 2079 "driver"); 2080 return NULL; 2081 } 2082 2083 wired = wpa_s->conf->ap_scan == 0 && 2084 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED); 2085 2086 entry = wpa_s->conf->ssid; 2087 while (entry) { 2088 if (!wpas_network_disabled(wpa_s, entry) && 2089 ((ssid_len == entry->ssid_len && 2090 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) && 2091 (!entry->bssid_set || 2092 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 2093 return entry; 2094 #ifdef CONFIG_WPS 2095 if (!wpas_network_disabled(wpa_s, entry) && 2096 (entry->key_mgmt & WPA_KEY_MGMT_WPS) && 2097 (entry->ssid == NULL || entry->ssid_len == 0) && 2098 (!entry->bssid_set || 2099 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 2100 return entry; 2101 #endif /* CONFIG_WPS */ 2102 2103 if (!wpas_network_disabled(wpa_s, entry) && entry->bssid_set && 2104 entry->ssid_len == 0 && 2105 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0) 2106 return entry; 2107 2108 entry = entry->next; 2109 } 2110 2111 return NULL; 2112 } 2113 2114 2115 static int select_driver(struct wpa_supplicant *wpa_s, int i) 2116 { 2117 struct wpa_global *global = wpa_s->global; 2118 2119 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) { 2120 global->drv_priv[i] = wpa_drivers[i]->global_init(); 2121 if (global->drv_priv[i] == NULL) { 2122 wpa_printf(MSG_ERROR, "Failed to initialize driver " 2123 "'%s'", wpa_drivers[i]->name); 2124 return -1; 2125 } 2126 } 2127 2128 wpa_s->driver = wpa_drivers[i]; 2129 wpa_s->global_drv_priv = global->drv_priv[i]; 2130 2131 return 0; 2132 } 2133 2134 2135 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s, 2136 const char *name) 2137 { 2138 int i; 2139 size_t len; 2140 const char *pos, *driver = name; 2141 2142 if (wpa_s == NULL) 2143 return -1; 2144 2145 if (wpa_drivers[0] == NULL) { 2146 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into " 2147 "wpa_supplicant"); 2148 return -1; 2149 } 2150 2151 if (name == NULL) { 2152 /* default to first driver in the list */ 2153 return select_driver(wpa_s, 0); 2154 } 2155 2156 do { 2157 pos = os_strchr(driver, ','); 2158 if (pos) 2159 len = pos - driver; 2160 else 2161 len = os_strlen(driver); 2162 2163 for (i = 0; wpa_drivers[i]; i++) { 2164 if (os_strlen(wpa_drivers[i]->name) == len && 2165 os_strncmp(driver, wpa_drivers[i]->name, len) == 2166 0) { 2167 /* First driver that succeeds wins */ 2168 if (select_driver(wpa_s, i) == 0) 2169 return 0; 2170 } 2171 } 2172 2173 driver = pos + 1; 2174 } while (pos); 2175 2176 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name); 2177 return -1; 2178 } 2179 2180 2181 /** 2182 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant 2183 * @ctx: Context pointer (wpa_s); this is the ctx variable registered 2184 * with struct wpa_driver_ops::init() 2185 * @src_addr: Source address of the EAPOL frame 2186 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header) 2187 * @len: Length of the EAPOL data 2188 * 2189 * This function is called for each received EAPOL frame. Most driver 2190 * interfaces rely on more generic OS mechanism for receiving frames through 2191 * l2_packet, but if such a mechanism is not available, the driver wrapper may 2192 * take care of received EAPOL frames and deliver them to the core supplicant 2193 * code by calling this function. 2194 */ 2195 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr, 2196 const u8 *buf, size_t len) 2197 { 2198 struct wpa_supplicant *wpa_s = ctx; 2199 2200 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr)); 2201 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len); 2202 2203 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 2204 /* 2205 * There is possible race condition between receiving the 2206 * association event and the EAPOL frame since they are coming 2207 * through different paths from the driver. In order to avoid 2208 * issues in trying to process the EAPOL frame before receiving 2209 * association information, lets queue it for processing until 2210 * the association event is received. 2211 */ 2212 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing " 2213 "of received EAPOL frame"); 2214 wpabuf_free(wpa_s->pending_eapol_rx); 2215 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len); 2216 if (wpa_s->pending_eapol_rx) { 2217 os_get_time(&wpa_s->pending_eapol_rx_time); 2218 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr, 2219 ETH_ALEN); 2220 } 2221 return; 2222 } 2223 2224 #ifdef CONFIG_AP 2225 if (wpa_s->ap_iface) { 2226 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len); 2227 return; 2228 } 2229 #endif /* CONFIG_AP */ 2230 2231 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) { 2232 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since " 2233 "no key management is configured"); 2234 return; 2235 } 2236 2237 if (wpa_s->eapol_received == 0 && 2238 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) || 2239 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 2240 wpa_s->wpa_state != WPA_COMPLETED) && 2241 (wpa_s->current_ssid == NULL || 2242 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) { 2243 /* Timeout for completing IEEE 802.1X and WPA authentication */ 2244 wpa_supplicant_req_auth_timeout( 2245 wpa_s, 2246 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 2247 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA || 2248 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ? 2249 70 : 10, 0); 2250 } 2251 wpa_s->eapol_received++; 2252 2253 if (wpa_s->countermeasures) { 2254 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped " 2255 "EAPOL packet"); 2256 return; 2257 } 2258 2259 #ifdef CONFIG_IBSS_RSN 2260 if (wpa_s->current_ssid && 2261 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) { 2262 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len); 2263 return; 2264 } 2265 #endif /* CONFIG_IBSS_RSN */ 2266 2267 /* Source address of the incoming EAPOL frame could be compared to the 2268 * current BSSID. However, it is possible that a centralized 2269 * Authenticator could be using another MAC address than the BSSID of 2270 * an AP, so just allow any address to be used for now. The replies are 2271 * still sent to the current BSSID (if available), though. */ 2272 2273 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN); 2274 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) && 2275 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0) 2276 return; 2277 wpa_drv_poll(wpa_s); 2278 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) 2279 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len); 2280 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 2281 /* 2282 * Set portValid = TRUE here since we are going to skip 4-way 2283 * handshake processing which would normally set portValid. We 2284 * need this to allow the EAPOL state machines to be completed 2285 * without going through EAPOL-Key handshake. 2286 */ 2287 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2288 } 2289 } 2290 2291 2292 int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s) 2293 { 2294 if (wpa_s->driver->send_eapol) { 2295 const u8 *addr = wpa_drv_get_mac_addr(wpa_s); 2296 if (addr) 2297 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN); 2298 } else if (!(wpa_s->drv_flags & 2299 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) { 2300 l2_packet_deinit(wpa_s->l2); 2301 wpa_s->l2 = l2_packet_init(wpa_s->ifname, 2302 wpa_drv_get_mac_addr(wpa_s), 2303 ETH_P_EAPOL, 2304 wpa_supplicant_rx_eapol, wpa_s, 0); 2305 if (wpa_s->l2 == NULL) 2306 return -1; 2307 } else { 2308 const u8 *addr = wpa_drv_get_mac_addr(wpa_s); 2309 if (addr) 2310 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN); 2311 } 2312 2313 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) { 2314 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address"); 2315 return -1; 2316 } 2317 2318 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR, 2319 MAC2STR(wpa_s->own_addr)); 2320 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr); 2321 2322 return 0; 2323 } 2324 2325 2326 static void wpa_supplicant_rx_eapol_bridge(void *ctx, const u8 *src_addr, 2327 const u8 *buf, size_t len) 2328 { 2329 struct wpa_supplicant *wpa_s = ctx; 2330 const struct l2_ethhdr *eth; 2331 2332 if (len < sizeof(*eth)) 2333 return; 2334 eth = (const struct l2_ethhdr *) buf; 2335 2336 if (os_memcmp(eth->h_dest, wpa_s->own_addr, ETH_ALEN) != 0 && 2337 !(eth->h_dest[0] & 0x01)) { 2338 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 2339 " (bridge - not for this interface - ignore)", 2340 MAC2STR(src_addr), MAC2STR(eth->h_dest)); 2341 return; 2342 } 2343 2344 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 2345 " (bridge)", MAC2STR(src_addr), MAC2STR(eth->h_dest)); 2346 wpa_supplicant_rx_eapol(wpa_s, src_addr, buf + sizeof(*eth), 2347 len - sizeof(*eth)); 2348 } 2349 2350 2351 /** 2352 * wpa_supplicant_driver_init - Initialize driver interface parameters 2353 * @wpa_s: Pointer to wpa_supplicant data 2354 * Returns: 0 on success, -1 on failure 2355 * 2356 * This function is called to initialize driver interface parameters. 2357 * wpa_drv_init() must have been called before this function to initialize the 2358 * driver interface. 2359 */ 2360 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s) 2361 { 2362 static int interface_count = 0; 2363 2364 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) 2365 return -1; 2366 2367 if (wpa_s->bridge_ifname[0]) { 2368 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge " 2369 "interface '%s'", wpa_s->bridge_ifname); 2370 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname, 2371 wpa_s->own_addr, 2372 ETH_P_EAPOL, 2373 wpa_supplicant_rx_eapol_bridge, 2374 wpa_s, 1); 2375 if (wpa_s->l2_br == NULL) { 2376 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet " 2377 "connection for the bridge interface '%s'", 2378 wpa_s->bridge_ifname); 2379 return -1; 2380 } 2381 } 2382 2383 wpa_clear_keys(wpa_s, NULL); 2384 2385 /* Make sure that TKIP countermeasures are not left enabled (could 2386 * happen if wpa_supplicant is killed during countermeasures. */ 2387 wpa_drv_set_countermeasures(wpa_s, 0); 2388 2389 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver"); 2390 wpa_drv_flush_pmkid(wpa_s); 2391 2392 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; 2393 wpa_s->prev_scan_wildcard = 0; 2394 2395 if (wpa_supplicant_enabled_networks(wpa_s)) { 2396 if (wpa_supplicant_delayed_sched_scan(wpa_s, interface_count, 2397 100000)) 2398 wpa_supplicant_req_scan(wpa_s, interface_count, 2399 100000); 2400 interface_count++; 2401 } else 2402 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 2403 2404 return 0; 2405 } 2406 2407 2408 static int wpa_supplicant_daemon(const char *pid_file) 2409 { 2410 wpa_printf(MSG_DEBUG, "Daemonize.."); 2411 return os_daemonize(pid_file); 2412 } 2413 2414 2415 static struct wpa_supplicant * wpa_supplicant_alloc(void) 2416 { 2417 struct wpa_supplicant *wpa_s; 2418 2419 wpa_s = os_zalloc(sizeof(*wpa_s)); 2420 if (wpa_s == NULL) 2421 return NULL; 2422 wpa_s->scan_req = 1; 2423 wpa_s->scan_interval = 5; 2424 wpa_s->new_connection = 1; 2425 wpa_s->parent = wpa_s; 2426 wpa_s->sched_scanning = 0; 2427 2428 return wpa_s; 2429 } 2430 2431 2432 #ifdef CONFIG_HT_OVERRIDES 2433 2434 static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s, 2435 struct ieee80211_ht_capabilities *htcaps, 2436 struct ieee80211_ht_capabilities *htcaps_mask, 2437 const char *ht_mcs) 2438 { 2439 /* parse ht_mcs into hex array */ 2440 int i; 2441 const char *tmp = ht_mcs; 2442 char *end = NULL; 2443 2444 /* If ht_mcs is null, do not set anything */ 2445 if (!ht_mcs) 2446 return 0; 2447 2448 /* This is what we are setting in the kernel */ 2449 os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN); 2450 2451 wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs); 2452 2453 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 2454 errno = 0; 2455 long v = strtol(tmp, &end, 16); 2456 if (errno == 0) { 2457 wpa_msg(wpa_s, MSG_DEBUG, 2458 "htcap value[%i]: %ld end: %p tmp: %p", 2459 i, v, end, tmp); 2460 if (end == tmp) 2461 break; 2462 2463 htcaps->supported_mcs_set[i] = v; 2464 tmp = end; 2465 } else { 2466 wpa_msg(wpa_s, MSG_ERROR, 2467 "Failed to parse ht-mcs: %s, error: %s\n", 2468 ht_mcs, strerror(errno)); 2469 return -1; 2470 } 2471 } 2472 2473 /* 2474 * If we were able to parse any values, then set mask for the MCS set. 2475 */ 2476 if (i) { 2477 os_memset(&htcaps_mask->supported_mcs_set, 0xff, 2478 IEEE80211_HT_MCS_MASK_LEN - 1); 2479 /* skip the 3 reserved bits */ 2480 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] = 2481 0x1f; 2482 } 2483 2484 return 0; 2485 } 2486 2487 2488 static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s, 2489 struct ieee80211_ht_capabilities *htcaps, 2490 struct ieee80211_ht_capabilities *htcaps_mask, 2491 int disabled) 2492 { 2493 u16 msk; 2494 2495 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled); 2496 2497 if (disabled == -1) 2498 return 0; 2499 2500 msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE); 2501 htcaps_mask->ht_capabilities_info |= msk; 2502 if (disabled) 2503 htcaps->ht_capabilities_info &= msk; 2504 else 2505 htcaps->ht_capabilities_info |= msk; 2506 2507 return 0; 2508 } 2509 2510 2511 static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s, 2512 struct ieee80211_ht_capabilities *htcaps, 2513 struct ieee80211_ht_capabilities *htcaps_mask, 2514 int factor) 2515 { 2516 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor); 2517 2518 if (factor == -1) 2519 return 0; 2520 2521 if (factor < 0 || factor > 3) { 2522 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. " 2523 "Must be 0-3 or -1", factor); 2524 return -EINVAL; 2525 } 2526 2527 htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */ 2528 htcaps->a_mpdu_params &= ~0x3; 2529 htcaps->a_mpdu_params |= factor & 0x3; 2530 2531 return 0; 2532 } 2533 2534 2535 static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s, 2536 struct ieee80211_ht_capabilities *htcaps, 2537 struct ieee80211_ht_capabilities *htcaps_mask, 2538 int density) 2539 { 2540 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density); 2541 2542 if (density == -1) 2543 return 0; 2544 2545 if (density < 0 || density > 7) { 2546 wpa_msg(wpa_s, MSG_ERROR, 2547 "ampdu_density: %d out of range. Must be 0-7 or -1.", 2548 density); 2549 return -EINVAL; 2550 } 2551 2552 htcaps_mask->a_mpdu_params |= 0x1C; 2553 htcaps->a_mpdu_params &= ~(0x1C); 2554 htcaps->a_mpdu_params |= (density << 2) & 0x1C; 2555 2556 return 0; 2557 } 2558 2559 2560 static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s, 2561 struct ieee80211_ht_capabilities *htcaps, 2562 struct ieee80211_ht_capabilities *htcaps_mask, 2563 int disabled) 2564 { 2565 /* Masking these out disables HT40 */ 2566 u16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET | 2567 HT_CAP_INFO_SHORT_GI40MHZ); 2568 2569 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled); 2570 2571 if (disabled) 2572 htcaps->ht_capabilities_info &= ~msk; 2573 else 2574 htcaps->ht_capabilities_info |= msk; 2575 2576 htcaps_mask->ht_capabilities_info |= msk; 2577 2578 return 0; 2579 } 2580 2581 2582 void wpa_supplicant_apply_ht_overrides( 2583 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 2584 struct wpa_driver_associate_params *params) 2585 { 2586 struct ieee80211_ht_capabilities *htcaps; 2587 struct ieee80211_ht_capabilities *htcaps_mask; 2588 2589 if (!ssid) 2590 return; 2591 2592 params->disable_ht = ssid->disable_ht; 2593 if (!params->htcaps || !params->htcaps_mask) 2594 return; 2595 2596 htcaps = (struct ieee80211_ht_capabilities *) params->htcaps; 2597 htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask; 2598 wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs); 2599 wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask, 2600 ssid->disable_max_amsdu); 2601 wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor); 2602 wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density); 2603 wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40); 2604 } 2605 2606 #endif /* CONFIG_HT_OVERRIDES */ 2607 2608 2609 static int pcsc_reader_init(struct wpa_supplicant *wpa_s) 2610 { 2611 #ifdef PCSC_FUNCS 2612 size_t len; 2613 2614 if (!wpa_s->conf->pcsc_reader) 2615 return 0; 2616 2617 wpa_s->scard = scard_init(SCARD_TRY_BOTH, wpa_s->conf->pcsc_reader); 2618 if (!wpa_s->scard) 2619 return 1; 2620 2621 if (wpa_s->conf->pcsc_pin && 2622 scard_set_pin(wpa_s->scard, wpa_s->conf->pcsc_pin) < 0) { 2623 scard_deinit(wpa_s->scard); 2624 wpa_s->scard = NULL; 2625 wpa_msg(wpa_s, MSG_ERROR, "PC/SC PIN validation failed"); 2626 return -1; 2627 } 2628 2629 len = sizeof(wpa_s->imsi) - 1; 2630 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { 2631 scard_deinit(wpa_s->scard); 2632 wpa_s->scard = NULL; 2633 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); 2634 return -1; 2635 } 2636 wpa_s->imsi[len] = '\0'; 2637 2638 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); 2639 2640 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", 2641 wpa_s->imsi, wpa_s->mnc_len); 2642 2643 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 2644 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 2645 #endif /* PCSC_FUNCS */ 2646 2647 return 0; 2648 } 2649 2650 2651 int wpas_init_ext_pw(struct wpa_supplicant *wpa_s) 2652 { 2653 char *val, *pos; 2654 2655 ext_password_deinit(wpa_s->ext_pw); 2656 wpa_s->ext_pw = NULL; 2657 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, NULL); 2658 2659 if (!wpa_s->conf->ext_password_backend) 2660 return 0; 2661 2662 val = os_strdup(wpa_s->conf->ext_password_backend); 2663 if (val == NULL) 2664 return -1; 2665 pos = os_strchr(val, ':'); 2666 if (pos) 2667 *pos++ = '\0'; 2668 2669 wpa_printf(MSG_DEBUG, "EXT PW: Initialize backend '%s'", val); 2670 2671 wpa_s->ext_pw = ext_password_init(val, pos); 2672 os_free(val); 2673 if (wpa_s->ext_pw == NULL) { 2674 wpa_printf(MSG_DEBUG, "EXT PW: Failed to initialize backend"); 2675 return -1; 2676 } 2677 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, wpa_s->ext_pw); 2678 2679 return 0; 2680 } 2681 2682 2683 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s, 2684 struct wpa_interface *iface) 2685 { 2686 const char *ifname, *driver; 2687 struct wpa_driver_capa capa; 2688 2689 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver " 2690 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname, 2691 iface->confname ? iface->confname : "N/A", 2692 iface->driver ? iface->driver : "default", 2693 iface->ctrl_interface ? iface->ctrl_interface : "N/A", 2694 iface->bridge_ifname ? iface->bridge_ifname : "N/A"); 2695 2696 if (iface->confname) { 2697 #ifdef CONFIG_BACKEND_FILE 2698 wpa_s->confname = os_rel2abs_path(iface->confname); 2699 if (wpa_s->confname == NULL) { 2700 wpa_printf(MSG_ERROR, "Failed to get absolute path " 2701 "for configuration file '%s'.", 2702 iface->confname); 2703 return -1; 2704 } 2705 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'", 2706 iface->confname, wpa_s->confname); 2707 #else /* CONFIG_BACKEND_FILE */ 2708 wpa_s->confname = os_strdup(iface->confname); 2709 #endif /* CONFIG_BACKEND_FILE */ 2710 wpa_s->conf = wpa_config_read(wpa_s->confname); 2711 if (wpa_s->conf == NULL) { 2712 wpa_printf(MSG_ERROR, "Failed to read or parse " 2713 "configuration '%s'.", wpa_s->confname); 2714 return -1; 2715 } 2716 2717 /* 2718 * Override ctrl_interface and driver_param if set on command 2719 * line. 2720 */ 2721 if (iface->ctrl_interface) { 2722 os_free(wpa_s->conf->ctrl_interface); 2723 wpa_s->conf->ctrl_interface = 2724 os_strdup(iface->ctrl_interface); 2725 } 2726 2727 if (iface->driver_param) { 2728 os_free(wpa_s->conf->driver_param); 2729 wpa_s->conf->driver_param = 2730 os_strdup(iface->driver_param); 2731 } 2732 } else 2733 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface, 2734 iface->driver_param); 2735 2736 if (wpa_s->conf == NULL) { 2737 wpa_printf(MSG_ERROR, "\nNo configuration found."); 2738 return -1; 2739 } 2740 2741 if (iface->ifname == NULL) { 2742 wpa_printf(MSG_ERROR, "\nInterface name is required."); 2743 return -1; 2744 } 2745 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) { 2746 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.", 2747 iface->ifname); 2748 return -1; 2749 } 2750 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname)); 2751 2752 if (iface->bridge_ifname) { 2753 if (os_strlen(iface->bridge_ifname) >= 2754 sizeof(wpa_s->bridge_ifname)) { 2755 wpa_printf(MSG_ERROR, "\nToo long bridge interface " 2756 "name '%s'.", iface->bridge_ifname); 2757 return -1; 2758 } 2759 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname, 2760 sizeof(wpa_s->bridge_ifname)); 2761 } 2762 2763 /* RSNA Supplicant Key Management - INITIALIZE */ 2764 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 2765 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 2766 2767 /* Initialize driver interface and register driver event handler before 2768 * L2 receive handler so that association events are processed before 2769 * EAPOL-Key packets if both become available for the same select() 2770 * call. */ 2771 driver = iface->driver; 2772 next_driver: 2773 if (wpa_supplicant_set_driver(wpa_s, driver) < 0) 2774 return -1; 2775 2776 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname); 2777 if (wpa_s->drv_priv == NULL) { 2778 const char *pos; 2779 pos = driver ? os_strchr(driver, ',') : NULL; 2780 if (pos) { 2781 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 2782 "driver interface - try next driver wrapper"); 2783 driver = pos + 1; 2784 goto next_driver; 2785 } 2786 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver " 2787 "interface"); 2788 return -1; 2789 } 2790 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) { 2791 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected " 2792 "driver_param '%s'", wpa_s->conf->driver_param); 2793 return -1; 2794 } 2795 2796 ifname = wpa_drv_get_ifname(wpa_s); 2797 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) { 2798 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced " 2799 "interface name with '%s'", ifname); 2800 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname)); 2801 } 2802 2803 if (wpa_supplicant_init_wpa(wpa_s) < 0) 2804 return -1; 2805 2806 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, 2807 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname : 2808 NULL); 2809 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 2810 2811 if (wpa_s->conf->dot11RSNAConfigPMKLifetime && 2812 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME, 2813 wpa_s->conf->dot11RSNAConfigPMKLifetime)) { 2814 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 2815 "dot11RSNAConfigPMKLifetime"); 2816 return -1; 2817 } 2818 2819 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold && 2820 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD, 2821 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) { 2822 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 2823 "dot11RSNAConfigPMKReauthThreshold"); 2824 return -1; 2825 } 2826 2827 if (wpa_s->conf->dot11RSNAConfigSATimeout && 2828 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, 2829 wpa_s->conf->dot11RSNAConfigSATimeout)) { 2830 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 2831 "dot11RSNAConfigSATimeout"); 2832 return -1; 2833 } 2834 2835 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s, 2836 &wpa_s->hw.num_modes, 2837 &wpa_s->hw.flags); 2838 2839 if (wpa_drv_get_capa(wpa_s, &capa) == 0) { 2840 wpa_s->drv_capa_known = 1; 2841 wpa_s->drv_flags = capa.flags; 2842 wpa_s->drv_enc = capa.enc; 2843 wpa_s->probe_resp_offloads = capa.probe_resp_offloads; 2844 wpa_s->max_scan_ssids = capa.max_scan_ssids; 2845 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids; 2846 wpa_s->sched_scan_supported = capa.sched_scan_supported; 2847 wpa_s->max_match_sets = capa.max_match_sets; 2848 wpa_s->max_remain_on_chan = capa.max_remain_on_chan; 2849 wpa_s->max_stations = capa.max_stations; 2850 } 2851 if (wpa_s->max_remain_on_chan == 0) 2852 wpa_s->max_remain_on_chan = 1000; 2853 2854 if (wpa_supplicant_driver_init(wpa_s) < 0) 2855 return -1; 2856 2857 #ifdef CONFIG_TDLS 2858 if (wpa_tdls_init(wpa_s->wpa)) 2859 return -1; 2860 #endif /* CONFIG_TDLS */ 2861 2862 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] && 2863 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) { 2864 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country"); 2865 return -1; 2866 } 2867 2868 if (wpas_wps_init(wpa_s)) 2869 return -1; 2870 2871 if (wpa_supplicant_init_eapol(wpa_s) < 0) 2872 return -1; 2873 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol); 2874 2875 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 2876 if (wpa_s->ctrl_iface == NULL) { 2877 wpa_printf(MSG_ERROR, 2878 "Failed to initialize control interface '%s'.\n" 2879 "You may have another wpa_supplicant process " 2880 "already running or the file was\n" 2881 "left by an unclean termination of wpa_supplicant " 2882 "in which case you will need\n" 2883 "to manually remove this file before starting " 2884 "wpa_supplicant again.\n", 2885 wpa_s->conf->ctrl_interface); 2886 return -1; 2887 } 2888 2889 wpa_s->gas = gas_query_init(wpa_s); 2890 if (wpa_s->gas == NULL) { 2891 wpa_printf(MSG_ERROR, "Failed to initialize GAS query"); 2892 return -1; 2893 } 2894 2895 #ifdef CONFIG_P2P 2896 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) { 2897 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P"); 2898 return -1; 2899 } 2900 #endif /* CONFIG_P2P */ 2901 2902 if (wpa_bss_init(wpa_s) < 0) 2903 return -1; 2904 2905 if (pcsc_reader_init(wpa_s) < 0) 2906 return -1; 2907 2908 if (wpas_init_ext_pw(wpa_s) < 0) 2909 return -1; 2910 2911 return 0; 2912 } 2913 2914 2915 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s, 2916 int notify, int terminate) 2917 { 2918 if (wpa_s->drv_priv) { 2919 wpa_supplicant_deauthenticate(wpa_s, 2920 WLAN_REASON_DEAUTH_LEAVING); 2921 2922 wpa_drv_set_countermeasures(wpa_s, 0); 2923 wpa_clear_keys(wpa_s, NULL); 2924 } 2925 2926 wpa_supplicant_cleanup(wpa_s); 2927 2928 #ifdef CONFIG_P2P 2929 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 2930 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 2931 "the management interface is being removed"); 2932 wpas_p2p_deinit_global(wpa_s->global); 2933 } 2934 #endif /* CONFIG_P2P */ 2935 2936 if (wpa_s->drv_priv) 2937 wpa_drv_deinit(wpa_s); 2938 2939 if (notify) 2940 wpas_notify_iface_removed(wpa_s); 2941 2942 if (terminate) 2943 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING); 2944 2945 if (wpa_s->ctrl_iface) { 2946 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 2947 wpa_s->ctrl_iface = NULL; 2948 } 2949 2950 if (wpa_s->conf != NULL) { 2951 wpa_config_free(wpa_s->conf); 2952 wpa_s->conf = NULL; 2953 } 2954 } 2955 2956 2957 /** 2958 * wpa_supplicant_add_iface - Add a new network interface 2959 * @global: Pointer to global data from wpa_supplicant_init() 2960 * @iface: Interface configuration options 2961 * Returns: Pointer to the created interface or %NULL on failure 2962 * 2963 * This function is used to add new network interfaces for %wpa_supplicant. 2964 * This can be called before wpa_supplicant_run() to add interfaces before the 2965 * main event loop has been started. In addition, new interfaces can be added 2966 * dynamically while %wpa_supplicant is already running. This could happen, 2967 * e.g., when a hotplug network adapter is inserted. 2968 */ 2969 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global, 2970 struct wpa_interface *iface) 2971 { 2972 struct wpa_supplicant *wpa_s; 2973 struct wpa_interface t_iface; 2974 struct wpa_ssid *ssid; 2975 2976 if (global == NULL || iface == NULL) 2977 return NULL; 2978 2979 wpa_s = wpa_supplicant_alloc(); 2980 if (wpa_s == NULL) 2981 return NULL; 2982 2983 wpa_s->global = global; 2984 2985 t_iface = *iface; 2986 if (global->params.override_driver) { 2987 wpa_printf(MSG_DEBUG, "Override interface parameter: driver " 2988 "('%s' -> '%s')", 2989 iface->driver, global->params.override_driver); 2990 t_iface.driver = global->params.override_driver; 2991 } 2992 if (global->params.override_ctrl_interface) { 2993 wpa_printf(MSG_DEBUG, "Override interface parameter: " 2994 "ctrl_interface ('%s' -> '%s')", 2995 iface->ctrl_interface, 2996 global->params.override_ctrl_interface); 2997 t_iface.ctrl_interface = 2998 global->params.override_ctrl_interface; 2999 } 3000 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) { 3001 wpa_printf(MSG_DEBUG, "Failed to add interface %s", 3002 iface->ifname); 3003 wpa_supplicant_deinit_iface(wpa_s, 0, 0); 3004 os_free(wpa_s); 3005 return NULL; 3006 } 3007 3008 /* Notify the control interfaces about new iface */ 3009 if (wpas_notify_iface_added(wpa_s)) { 3010 wpa_supplicant_deinit_iface(wpa_s, 1, 0); 3011 os_free(wpa_s); 3012 return NULL; 3013 } 3014 3015 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 3016 wpas_notify_network_added(wpa_s, ssid); 3017 3018 wpa_s->next = global->ifaces; 3019 global->ifaces = wpa_s; 3020 3021 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname); 3022 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3023 3024 return wpa_s; 3025 } 3026 3027 3028 /** 3029 * wpa_supplicant_remove_iface - Remove a network interface 3030 * @global: Pointer to global data from wpa_supplicant_init() 3031 * @wpa_s: Pointer to the network interface to be removed 3032 * Returns: 0 if interface was removed, -1 if interface was not found 3033 * 3034 * This function can be used to dynamically remove network interfaces from 3035 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In 3036 * addition, this function is used to remove all remaining interfaces when 3037 * %wpa_supplicant is terminated. 3038 */ 3039 int wpa_supplicant_remove_iface(struct wpa_global *global, 3040 struct wpa_supplicant *wpa_s, 3041 int terminate) 3042 { 3043 struct wpa_supplicant *prev; 3044 3045 /* Remove interface from the global list of interfaces */ 3046 prev = global->ifaces; 3047 if (prev == wpa_s) { 3048 global->ifaces = wpa_s->next; 3049 } else { 3050 while (prev && prev->next != wpa_s) 3051 prev = prev->next; 3052 if (prev == NULL) 3053 return -1; 3054 prev->next = wpa_s->next; 3055 } 3056 3057 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname); 3058 3059 if (global->p2p_group_formation == wpa_s) 3060 global->p2p_group_formation = NULL; 3061 wpa_supplicant_deinit_iface(wpa_s, 1, terminate); 3062 os_free(wpa_s); 3063 3064 return 0; 3065 } 3066 3067 3068 /** 3069 * wpa_supplicant_get_eap_mode - Get the current EAP mode 3070 * @wpa_s: Pointer to the network interface 3071 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found 3072 */ 3073 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s) 3074 { 3075 const char *eapol_method; 3076 3077 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 && 3078 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 3079 return "NO-EAP"; 3080 } 3081 3082 eapol_method = eapol_sm_get_method_name(wpa_s->eapol); 3083 if (eapol_method == NULL) 3084 return "UNKNOWN-EAP"; 3085 3086 return eapol_method; 3087 } 3088 3089 3090 /** 3091 * wpa_supplicant_get_iface - Get a new network interface 3092 * @global: Pointer to global data from wpa_supplicant_init() 3093 * @ifname: Interface name 3094 * Returns: Pointer to the interface or %NULL if not found 3095 */ 3096 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global, 3097 const char *ifname) 3098 { 3099 struct wpa_supplicant *wpa_s; 3100 3101 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3102 if (os_strcmp(wpa_s->ifname, ifname) == 0) 3103 return wpa_s; 3104 } 3105 return NULL; 3106 } 3107 3108 3109 #ifndef CONFIG_NO_WPA_MSG 3110 static const char * wpa_supplicant_msg_ifname_cb(void *ctx) 3111 { 3112 struct wpa_supplicant *wpa_s = ctx; 3113 if (wpa_s == NULL) 3114 return NULL; 3115 return wpa_s->ifname; 3116 } 3117 #endif /* CONFIG_NO_WPA_MSG */ 3118 3119 3120 /** 3121 * wpa_supplicant_init - Initialize %wpa_supplicant 3122 * @params: Parameters for %wpa_supplicant 3123 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure 3124 * 3125 * This function is used to initialize %wpa_supplicant. After successful 3126 * initialization, the returned data pointer can be used to add and remove 3127 * network interfaces, and eventually, to deinitialize %wpa_supplicant. 3128 */ 3129 struct wpa_global * wpa_supplicant_init(struct wpa_params *params) 3130 { 3131 struct wpa_global *global; 3132 int ret, i; 3133 3134 if (params == NULL) 3135 return NULL; 3136 3137 #ifdef CONFIG_DRIVER_NDIS 3138 { 3139 void driver_ndis_init_ops(void); 3140 driver_ndis_init_ops(); 3141 } 3142 #endif /* CONFIG_DRIVER_NDIS */ 3143 3144 #ifndef CONFIG_NO_WPA_MSG 3145 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb); 3146 #endif /* CONFIG_NO_WPA_MSG */ 3147 3148 wpa_debug_open_file(params->wpa_debug_file_path); 3149 if (params->wpa_debug_syslog) 3150 wpa_debug_open_syslog(); 3151 if (params->wpa_debug_tracing) { 3152 ret = wpa_debug_open_linux_tracing(); 3153 if (ret) { 3154 wpa_printf(MSG_ERROR, 3155 "Failed to enable trace logging"); 3156 return NULL; 3157 } 3158 } 3159 3160 ret = eap_register_methods(); 3161 if (ret) { 3162 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 3163 if (ret == -2) 3164 wpa_printf(MSG_ERROR, "Two or more EAP methods used " 3165 "the same EAP type."); 3166 return NULL; 3167 } 3168 3169 global = os_zalloc(sizeof(*global)); 3170 if (global == NULL) 3171 return NULL; 3172 dl_list_init(&global->p2p_srv_bonjour); 3173 dl_list_init(&global->p2p_srv_upnp); 3174 global->params.daemonize = params->daemonize; 3175 global->params.wait_for_monitor = params->wait_for_monitor; 3176 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface; 3177 if (params->pid_file) 3178 global->params.pid_file = os_strdup(params->pid_file); 3179 if (params->ctrl_interface) 3180 global->params.ctrl_interface = 3181 os_strdup(params->ctrl_interface); 3182 if (params->override_driver) 3183 global->params.override_driver = 3184 os_strdup(params->override_driver); 3185 if (params->override_ctrl_interface) 3186 global->params.override_ctrl_interface = 3187 os_strdup(params->override_ctrl_interface); 3188 wpa_debug_level = global->params.wpa_debug_level = 3189 params->wpa_debug_level; 3190 wpa_debug_show_keys = global->params.wpa_debug_show_keys = 3191 params->wpa_debug_show_keys; 3192 wpa_debug_timestamp = global->params.wpa_debug_timestamp = 3193 params->wpa_debug_timestamp; 3194 3195 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR); 3196 3197 if (eloop_init()) { 3198 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 3199 wpa_supplicant_deinit(global); 3200 return NULL; 3201 } 3202 3203 random_init(params->entropy_file); 3204 3205 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global); 3206 if (global->ctrl_iface == NULL) { 3207 wpa_supplicant_deinit(global); 3208 return NULL; 3209 } 3210 3211 if (wpas_notify_supplicant_initialized(global)) { 3212 wpa_supplicant_deinit(global); 3213 return NULL; 3214 } 3215 3216 for (i = 0; wpa_drivers[i]; i++) 3217 global->drv_count++; 3218 if (global->drv_count == 0) { 3219 wpa_printf(MSG_ERROR, "No drivers enabled"); 3220 wpa_supplicant_deinit(global); 3221 return NULL; 3222 } 3223 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *)); 3224 if (global->drv_priv == NULL) { 3225 wpa_supplicant_deinit(global); 3226 return NULL; 3227 } 3228 3229 #ifdef CONFIG_WIFI_DISPLAY 3230 if (wifi_display_init(global) < 0) { 3231 wpa_printf(MSG_ERROR, "Failed to initialize Wi-Fi Display"); 3232 wpa_supplicant_deinit(global); 3233 return NULL; 3234 } 3235 #endif /* CONFIG_WIFI_DISPLAY */ 3236 3237 return global; 3238 } 3239 3240 3241 /** 3242 * wpa_supplicant_run - Run the %wpa_supplicant main event loop 3243 * @global: Pointer to global data from wpa_supplicant_init() 3244 * Returns: 0 after successful event loop run, -1 on failure 3245 * 3246 * This function starts the main event loop and continues running as long as 3247 * there are any remaining events. In most cases, this function is running as 3248 * long as the %wpa_supplicant process in still in use. 3249 */ 3250 int wpa_supplicant_run(struct wpa_global *global) 3251 { 3252 struct wpa_supplicant *wpa_s; 3253 3254 if (global->params.daemonize && 3255 wpa_supplicant_daemon(global->params.pid_file)) 3256 return -1; 3257 3258 if (global->params.wait_for_monitor) { 3259 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) 3260 if (wpa_s->ctrl_iface) 3261 wpa_supplicant_ctrl_iface_wait( 3262 wpa_s->ctrl_iface); 3263 } 3264 3265 eloop_register_signal_terminate(wpa_supplicant_terminate, global); 3266 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global); 3267 3268 eloop_run(); 3269 3270 return 0; 3271 } 3272 3273 3274 /** 3275 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant 3276 * @global: Pointer to global data from wpa_supplicant_init() 3277 * 3278 * This function is called to deinitialize %wpa_supplicant and to free all 3279 * allocated resources. Remaining network interfaces will also be removed. 3280 */ 3281 void wpa_supplicant_deinit(struct wpa_global *global) 3282 { 3283 int i; 3284 3285 if (global == NULL) 3286 return; 3287 3288 #ifdef CONFIG_WIFI_DISPLAY 3289 wifi_display_deinit(global); 3290 #endif /* CONFIG_WIFI_DISPLAY */ 3291 #ifdef CONFIG_P2P 3292 wpas_p2p_deinit_global(global); 3293 #endif /* CONFIG_P2P */ 3294 3295 while (global->ifaces) 3296 wpa_supplicant_remove_iface(global, global->ifaces, 1); 3297 3298 if (global->ctrl_iface) 3299 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface); 3300 3301 wpas_notify_supplicant_deinitialized(global); 3302 3303 eap_peer_unregister_methods(); 3304 #ifdef CONFIG_AP 3305 eap_server_unregister_methods(); 3306 #endif /* CONFIG_AP */ 3307 3308 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) { 3309 if (!global->drv_priv[i]) 3310 continue; 3311 wpa_drivers[i]->global_deinit(global->drv_priv[i]); 3312 } 3313 os_free(global->drv_priv); 3314 3315 random_deinit(); 3316 3317 eloop_destroy(); 3318 3319 if (global->params.pid_file) { 3320 os_daemonize_terminate(global->params.pid_file); 3321 os_free(global->params.pid_file); 3322 } 3323 os_free(global->params.ctrl_interface); 3324 os_free(global->params.override_driver); 3325 os_free(global->params.override_ctrl_interface); 3326 3327 os_free(global->p2p_disallow_freq); 3328 3329 os_free(global); 3330 wpa_debug_close_syslog(); 3331 wpa_debug_close_file(); 3332 wpa_debug_close_linux_tracing(); 3333 } 3334 3335 3336 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s) 3337 { 3338 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 3339 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 3340 char country[3]; 3341 country[0] = wpa_s->conf->country[0]; 3342 country[1] = wpa_s->conf->country[1]; 3343 country[2] = '\0'; 3344 if (wpa_drv_set_country(wpa_s, country) < 0) { 3345 wpa_printf(MSG_ERROR, "Failed to set country code " 3346 "'%s'", country); 3347 } 3348 } 3349 3350 if (wpa_s->conf->changed_parameters & CFG_CHANGED_EXT_PW_BACKEND) 3351 wpas_init_ext_pw(wpa_s); 3352 3353 #ifdef CONFIG_WPS 3354 wpas_wps_update_config(wpa_s); 3355 #endif /* CONFIG_WPS */ 3356 3357 #ifdef CONFIG_P2P 3358 wpas_p2p_update_config(wpa_s); 3359 #endif /* CONFIG_P2P */ 3360 3361 wpa_s->conf->changed_parameters = 0; 3362 } 3363 3364 3365 static void add_freq(int *freqs, int *num_freqs, int freq) 3366 { 3367 int i; 3368 3369 for (i = 0; i < *num_freqs; i++) { 3370 if (freqs[i] == freq) 3371 return; 3372 } 3373 3374 freqs[*num_freqs] = freq; 3375 (*num_freqs)++; 3376 } 3377 3378 3379 static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s) 3380 { 3381 struct wpa_bss *bss, *cbss; 3382 const int max_freqs = 10; 3383 int *freqs; 3384 int num_freqs = 0; 3385 3386 freqs = os_zalloc(sizeof(int) * (max_freqs + 1)); 3387 if (freqs == NULL) 3388 return NULL; 3389 3390 cbss = wpa_s->current_bss; 3391 3392 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 3393 if (bss == cbss) 3394 continue; 3395 if (bss->ssid_len == cbss->ssid_len && 3396 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 && 3397 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) { 3398 add_freq(freqs, &num_freqs, bss->freq); 3399 if (num_freqs == max_freqs) 3400 break; 3401 } 3402 } 3403 3404 if (num_freqs == 0) { 3405 os_free(freqs); 3406 freqs = NULL; 3407 } 3408 3409 return freqs; 3410 } 3411 3412 3413 void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid) 3414 { 3415 int timeout; 3416 int count; 3417 int *freqs = NULL; 3418 3419 /* 3420 * Remove possible authentication timeout since the connection failed. 3421 */ 3422 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 3423 3424 /* 3425 * Add the failed BSSID into the blacklist and speed up next scan 3426 * attempt if there could be other APs that could accept association. 3427 * The current blacklist count indicates how many times we have tried 3428 * connecting to this AP and multiple attempts mean that other APs are 3429 * either not available or has already been tried, so that we can start 3430 * increasing the delay here to avoid constant scanning. 3431 */ 3432 count = wpa_blacklist_add(wpa_s, bssid); 3433 if (count == 1 && wpa_s->current_bss) { 3434 /* 3435 * This BSS was not in the blacklist before. If there is 3436 * another BSS available for the same ESS, we should try that 3437 * next. Otherwise, we may as well try this one once more 3438 * before allowing other, likely worse, ESSes to be considered. 3439 */ 3440 freqs = get_bss_freqs_in_ess(wpa_s); 3441 if (freqs) { 3442 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS " 3443 "has been seen; try it next"); 3444 wpa_blacklist_add(wpa_s, bssid); 3445 /* 3446 * On the next scan, go through only the known channels 3447 * used in this ESS based on previous scans to speed up 3448 * common load balancing use case. 3449 */ 3450 os_free(wpa_s->next_scan_freqs); 3451 wpa_s->next_scan_freqs = freqs; 3452 } 3453 } 3454 3455 switch (count) { 3456 case 1: 3457 timeout = 100; 3458 break; 3459 case 2: 3460 timeout = 500; 3461 break; 3462 case 3: 3463 timeout = 1000; 3464 break; 3465 default: 3466 timeout = 5000; 3467 } 3468 3469 /* 3470 * TODO: if more than one possible AP is available in scan results, 3471 * could try the other ones before requesting a new scan. 3472 */ 3473 wpa_supplicant_req_scan(wpa_s, timeout / 1000, 3474 1000 * (timeout % 1000)); 3475 3476 #ifdef CONFIG_P2P 3477 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled && 3478 wpa_s->global->p2p != NULL) { 3479 wpa_s->global->p2p_cb_on_scan_complete = 0; 3480 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { 3481 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " 3482 "continued after failed association"); 3483 } 3484 } 3485 #endif /* CONFIG_P2P */ 3486 } 3487 3488 3489 int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s) 3490 { 3491 return wpa_s->conf->ap_scan == 2 || 3492 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION); 3493 } 3494 3495 3496 #if defined(CONFIG_CTRL_IFACE) || defined(CONFIG_CTRL_IFACE_DBUS_NEW) 3497 int wpa_supplicant_ctrl_iface_ctrl_rsp_handle(struct wpa_supplicant *wpa_s, 3498 struct wpa_ssid *ssid, 3499 const char *field, 3500 const char *value) 3501 { 3502 #ifdef IEEE8021X_EAPOL 3503 struct eap_peer_config *eap = &ssid->eap; 3504 3505 wpa_printf(MSG_DEBUG, "CTRL_IFACE: response handle field=%s", field); 3506 wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: response value", 3507 (const u8 *) value, os_strlen(value)); 3508 3509 switch (wpa_supplicant_ctrl_req_from_string(field)) { 3510 case WPA_CTRL_REQ_EAP_IDENTITY: 3511 os_free(eap->identity); 3512 eap->identity = (u8 *) os_strdup(value); 3513 eap->identity_len = os_strlen(value); 3514 eap->pending_req_identity = 0; 3515 if (ssid == wpa_s->current_ssid) 3516 wpa_s->reassociate = 1; 3517 break; 3518 case WPA_CTRL_REQ_EAP_PASSWORD: 3519 os_free(eap->password); 3520 eap->password = (u8 *) os_strdup(value); 3521 eap->password_len = os_strlen(value); 3522 eap->pending_req_password = 0; 3523 if (ssid == wpa_s->current_ssid) 3524 wpa_s->reassociate = 1; 3525 break; 3526 case WPA_CTRL_REQ_EAP_NEW_PASSWORD: 3527 os_free(eap->new_password); 3528 eap->new_password = (u8 *) os_strdup(value); 3529 eap->new_password_len = os_strlen(value); 3530 eap->pending_req_new_password = 0; 3531 if (ssid == wpa_s->current_ssid) 3532 wpa_s->reassociate = 1; 3533 break; 3534 case WPA_CTRL_REQ_EAP_PIN: 3535 os_free(eap->pin); 3536 eap->pin = os_strdup(value); 3537 eap->pending_req_pin = 0; 3538 if (ssid == wpa_s->current_ssid) 3539 wpa_s->reassociate = 1; 3540 break; 3541 case WPA_CTRL_REQ_EAP_OTP: 3542 os_free(eap->otp); 3543 eap->otp = (u8 *) os_strdup(value); 3544 eap->otp_len = os_strlen(value); 3545 os_free(eap->pending_req_otp); 3546 eap->pending_req_otp = NULL; 3547 eap->pending_req_otp_len = 0; 3548 break; 3549 case WPA_CTRL_REQ_EAP_PASSPHRASE: 3550 os_free(eap->private_key_passwd); 3551 eap->private_key_passwd = (u8 *) os_strdup(value); 3552 eap->pending_req_passphrase = 0; 3553 if (ssid == wpa_s->current_ssid) 3554 wpa_s->reassociate = 1; 3555 break; 3556 default: 3557 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", field); 3558 return -1; 3559 } 3560 3561 return 0; 3562 #else /* IEEE8021X_EAPOL */ 3563 wpa_printf(MSG_DEBUG, "CTRL_IFACE: IEEE 802.1X not included"); 3564 return -1; 3565 #endif /* IEEE8021X_EAPOL */ 3566 } 3567 #endif /* CONFIG_CTRL_IFACE || CONFIG_CTRL_IFACE_DBUS_NEW */ 3568 3569 3570 int wpas_network_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 3571 { 3572 int i; 3573 unsigned int drv_enc; 3574 3575 if (ssid == NULL) 3576 return 1; 3577 3578 if (ssid->disabled) 3579 return 1; 3580 3581 if (wpa_s && wpa_s->drv_capa_known) 3582 drv_enc = wpa_s->drv_enc; 3583 else 3584 drv_enc = (unsigned int) -1; 3585 3586 for (i = 0; i < NUM_WEP_KEYS; i++) { 3587 size_t len = ssid->wep_key_len[i]; 3588 if (len == 0) 3589 continue; 3590 if (len == 5 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP40)) 3591 continue; 3592 if (len == 13 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP104)) 3593 continue; 3594 if (len == 16 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP128)) 3595 continue; 3596 return 1; /* invalid WEP key */ 3597 } 3598 3599 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set && 3600 !ssid->ext_psk) 3601 return 1; 3602 3603 return 0; 3604 } 3605 3606 3607 int wpas_is_p2p_prioritized(struct wpa_supplicant *wpa_s) 3608 { 3609 if (wpa_s->global->conc_pref == WPA_CONC_PREF_P2P) 3610 return 1; 3611 if (wpa_s->global->conc_pref == WPA_CONC_PREF_STA) 3612 return 0; 3613 return -1; 3614 } 3615 3616 3617 void wpas_auth_failed(struct wpa_supplicant *wpa_s) 3618 { 3619 struct wpa_ssid *ssid = wpa_s->current_ssid; 3620 int dur; 3621 struct os_time now; 3622 3623 if (ssid == NULL) { 3624 wpa_printf(MSG_DEBUG, "Authentication failure but no known " 3625 "SSID block"); 3626 return; 3627 } 3628 3629 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS) 3630 return; 3631 3632 ssid->auth_failures++; 3633 if (ssid->auth_failures > 50) 3634 dur = 300; 3635 else if (ssid->auth_failures > 20) 3636 dur = 120; 3637 else if (ssid->auth_failures > 10) 3638 dur = 60; 3639 else if (ssid->auth_failures > 5) 3640 dur = 30; 3641 else if (ssid->auth_failures > 1) 3642 dur = 20; 3643 else 3644 dur = 10; 3645 3646 os_get_time(&now); 3647 if (now.sec + dur <= ssid->disabled_until.sec) 3648 return; 3649 3650 ssid->disabled_until.sec = now.sec + dur; 3651 3652 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TEMP_DISABLED 3653 "id=%d ssid=\"%s\" auth_failures=%u duration=%d", 3654 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 3655 ssid->auth_failures, dur); 3656 } 3657 3658 3659 void wpas_clear_temp_disabled(struct wpa_supplicant *wpa_s, 3660 struct wpa_ssid *ssid, int clear_failures) 3661 { 3662 if (ssid == NULL) 3663 return; 3664 3665 if (ssid->disabled_until.sec) { 3666 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REENABLED 3667 "id=%d ssid=\"%s\"", 3668 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3669 } 3670 ssid->disabled_until.sec = 0; 3671 ssid->disabled_until.usec = 0; 3672 if (clear_failures) 3673 ssid->auth_failures = 0; 3674 } 3675
